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Audacity is a free, easy-to-use and multilingual audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. You can use Audacity to: Record live audio. Convert tapes and records into digital recordings or CDs. Edit Ogg Vorbis, MP3, WAV or AIFF sound files. Cut, copy, splice or mix sounds together. Change the speed or pitch of a recording. Full description.

Free software
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Version:2.0.6 History
Released:

Size:21.8MB

Portable version



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  Latest version:
2.0.6 (September 29, 2014)


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Supported operating systems:
Windows Mac OS Linux


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Version history / Release notes / Changelog:
Changes since version 2.0.5

Improvements

Interface:
Redesigned, searchable Keyboard Preferences with Tree, Name and Key views.
Edit Menu: "Cut" and "Delete" are now in the top level of the menu.
Transport Menu now includes "Play/Stop" and "Play/Stop and Set Cursor" (use Keyboard Preferences to create shortcuts for "Play" and "Stop").
Tracks Menu now includes "Mix and Render to New Track".
Track Drop-Down Menu now has Move Track To Top and Move Track To Bottom.
New right-click menu choice "Delete Label" to remove single labels.
"Snap To" now offers choice of snap to the "closest" or "prior" position. Note: the previous "Snap To On" keyboard shortcut will no longer work.
"Snap To" settings are now independent for each project.
Effects:
Truncate Silence: redesigned with simpler option "Truncate Detected Silence" to shorten to the specified length without compressing silence.
VST effects: New "Settings" dialog lets you specify buffer size (for faster processing) and enable buffer delay compensation (to prevent inserted silence). Compensation may cause a crash in a few plug-ins.
VST effects now support standard FXP presets.
LV2 effects are now supported on all platforms (textual interface only).
Import or export using FFmpeg now requires FFmpeg 1.2 or later (or libav 0.8 or later). For recommended downloads of recent FFmpeg please visit http://manual.audacityteam.org/o/man/faq_installation_and_plug_ins.html#ffdown.
New Tamil translation (largely complete).
(Windows) FLAC exports can now exceed 2 GB in size.
(OS X) Easier Audacity installation using the DMG: drag the Audacity folder to the /Applications shortcut.
(Linux) Self-compiled builds of Audacity now search for system LADSPA effects in /usr/lib/ladspa.

Bug Fixes

Interface:
Region Restore did not restore the region after using Preferences.
Dragging selections with the keyboard or Selection Toolbar digits was very slow.
(Windows) Help > About Audacity crashed when run in Magyar language.
(OS X) Some full and reduced Menu Bar items were not translated.
(OS X and Linux) Fixed various interface crashes.
Effects:
Reverb and Paulstretch were missing from Chains.
Analyze > Contrast could report very inaccurate rms levels.
Noise Removal: Attack and decay times were half as long as set.
(OS X and Linux) Nyquist effects ran much more slowly than on Windows.
Click or drag on the Timeline after Loop Play continued to loop.
Transcription Toolbar did not play slower than 0.1x speed.
(Linux) Audacity did not build if python 2 was not available.


Changes since version 2.0.4:

Bug fixes for:

* Shaped dither was corrupted and too loud on all stereo exports except FLAC.

* Keyboard Preferences: some Edit and Align commands for different sub-menus showed the same name.

* Recordings stopped with "Stop and Set Cursor" shortcut could not be undone.

* In locales that use comma for decimal separator: * Text boxes with slider in Nyquist effects only produced whole numbers when using comma to enter a fractional number. Text boxes without slider still have this problem. * Built-in generators produced silence after running a Nyquist effect.

* (Windows) When first changing to Windows WASAPI host, the input volume slider in Mixer Toolbar was enabled when it should have been permanently disabled.

* (Windows) On some machines, launching Audacity then recording from the current Device Toolbar input would not record until the input was reselected.

* (OS X) Frequent crashes occurred on importing audio files on some machines.

* (OS X) Files did not open using Finder "Open with", double-clicking the file or dragging the file to the Audacity icon.

* (Linux 64-bit) Fixed a crash when using Equalization.

* (Linux) It was not possible to open an effect or other dialog then navigate through the dialog using TAB.

* (Linux) The Play shortcut did not play a read-directly WAV, AIFF or FLAC import if the warning for importing uncompressed files appeared.

Changes and Improvements:

* Tracks Menu:
* The separate commands that aligned track start or end with the cursor or with selection start are combined into "Cursor/Selection Start" commands.
* "Align and Move Cursor" renamed to "Move Selection when Aligning".

* Label Tracks:
* Labels Editor now allows empty labels to be saved on closing the editor.
* TAB and SHIFT+TAB when the label track has focus now always move forwards or backwards respectively to the nearest label.

* (Windows) On a very few machines, the Windows WDM-KS low latency audio host introduced in Audacity 2.0.4 caused Audacity to hang or the computer to crash. WDM-KS has been removed from 2.0.5 until it can be safely enabled.

* (Windows and OS X) Screen reader improvements for Install VST Effects dialog.

* (OS X) Audio Unit plug-ins detected by Audacity on launch are now not loaded until chosen from the Effect menu. This should speed up launch and avoid crashes at launch due to misbehaving Audio Units.

* (Linux) Update to PortAudio r1910 fixes memory and other bugs under ALSA.

* (Linux) Applied fix for wxGTK 2.8.12 bug which resulted in loss of Audacity's menu bar (or visual corruption under Unity) on Debian-based systems.


Changes since version 2.0.3:

Bug fixes for:

* Keyboard Preferences: Shortcuts for Generators, Effects and Analyzers were not exported. All imported shortcut changes were discarded.
* Equalization curves were corrupted in Graphic EQ mode after switching to/from Draw Curves or afterrunning the effect then reopening it.
* Change Pitch displayed corrupted values when reducing pitch or editing "from" Frequency. Detection was very inaccurate at high sample rates.
* Bass Boost no longer clips if the track contains 32-bit audio.
* Auto Duck was excessively slow on older machines.
* (Windows) Exported MP3 comments tags were not seen by Windows programs.
* (Windows and OS X) Audacity crashed if you used system quit before file import was complete.
* (Linux) Equalization crashed Audacity if the XML file was corrupted.
* (Linux) When configuring effect parameters in "Edit Chains", "Preview" (not intended to be functional) caused a crash.
* (Linux) LICENSE.txt and README.txt were wrongly installed in /usr/local/share/doc instead of /usr/local/share/doc/audacity/ .
* Accessibility: ENTER did not toggle selectedness of a label track unless a label was selected.
* Numerous other interface fixes.

Changes and Improvements:

* New "Reverb" effect to replace GVerb, based on the original "Freeverb".
* New View > Go to Selection Start and Go to Selection End commands.
* New "Align End to End" command to append existing tracks to each other.
* Change Tempo now supports fractional BPM.
* Plot Spectrum now supports FFT sizes up to 65536.
* WAV files now support "Album Title", "Track Number" and "Genre" LIST INFO tags and also support ID3 tags.
* Handle a bug in older iPods or some OS X applications that cause them to refuse AIFF files whose metadata contains an uneven number of characters,
* (Windows) Added support for "Windows WDM-KS" host which can provide very low latencies if you reduce "Audio to Buffer" in Recording Preferences.
* (Windows Vista and later) You can now record computer playback by choosing the new "Windows WASAPI" host in Device Toolbar then a "loopback" input.
* (Windows and Mac OS X): VST scanning dialog now replaced with a dialog for choosing which VST effects to load.
* (Linux) CTRL + ALT can now be used to smooth samples in Draw Tool.
* Modules Preferences replaced with a dialog on launch of Audacity enabling you to choose which modules to load.


Changes since version 2.0.2:

Bug fixes for:

* Crash using Undo whilst time-shifting a track.
* Crash using Repair if the selection extended into an empty track.
* Export Multiple didn't prevent export if there was no audio or all audio was muted. This allowed export of small invalid files.

* Time Track:
* Loop Play of a speeded-up track inserted silence.
* Playback and rendering was significantly inaccurate, creating audible and visual glitches.

* Accessibility:
* The mnemonics character "&" was read out by screen readers in most of the Preferences choices.
* NVDA did not read static text in most dialogs. Text can now be read by using INSERT + B.
* JAWS and Window-eyes misread the "Duration" control in Silence Generator.
* Toolbar buttons could not be pressed by ENTER

* Other interface bug fixes.


Changes and Improvements:

* The SoX Resampler library (libsoxr) has replaced libresample in Audacity releases, offering both higher quality and greater speed. .

* Time Tracks new features:
* "Set Range" now changes only the range of the Time Track, preserving the pitch/speed set by any existing warp points.
* Vertical scale added with options for linear and logarithmic display and interpolation.
* Upper and lower speed limits will now be remembered when saving and reopening a project in 2.0.3. Warp points in projects saved by previous Audacity versions will be correctly restored in 2.0.3.
* Warp points saved in a 2.0.3 project will be preserved if opened in previous versions but playback and display will be incorrect.

* New effects:
* Studio Fade Out (uses a filtered "S" curve).
* Adjustable Fade (accessible effect for creating partial fades and adjustable fade shapes).
* Bass and Treble (replaces Bass Boost).

* Real sample rates up to 384000 Hz are now supported for playback and recording in high resolution devices (the maximum is up to 192000 Hz for Windows DirectSound host).

* Labeled Regions in Edit Menu is renamed to "Labeled Audio" and now allows splits to be placed at point labels. Labeled audio regions
that touch without overlapping are treated as separate regions. Overlapping labeled audio regions are treated as a single region.

* Compilation: cmake is required in order to build libsoxr.

* New Croatian translation of Audacity.


Changes since version 2.0.1:

Bug fixes for:

* Interface:
* "Retain labels" Interface Preference did not retain labels for a region that snapped exactly to both label edges.
* Projects did not save the track selected state.
* (OS X, Linux) Timer Record: Interlinking of the Start, End and Duration controls was broken.
* (Windows) JAWS screen-reader did not read the "Draw curves" and "Graphic EQ" radio buttons in Equalization correctly.

* Envelopes and Clips:
* Exporting (or any render operation) on a track containing split lines could create clicks at the split lines.
* Dragging a clip into another track caused a crash if Sync-Lock Tracks was enabled and there was also a label track.

* Effects and Analysis:
* Normalize could crash if the track name contained "%".

Changes and Improvements:

* Duration controls when generating at a point now default to hh:mm:ss + milliseconds format. Selection Toolbar also defaults to that format on first installation or resetting preferences.
* Toolbars visual improvements:
* "Snap To" in Selection Toolbar now has an explanatory tooltip.
* Device Toolbar tooltips now display the selected device.
* Increased default width of Device Toolbar and Meter Toolbar.
* Improvements and some bug fixes to Nyquist effects, including:
* Delay (new option to prevent duration change)
* Sample Data Export (new "L-R on Same Line" layout option)
* Risset Drum (new "Amplitude" slider).
* Importing a labels file writes the file name to the name of the Label Track, and exporting a labels file offers the name of the last Label Track in the project.
* Removed the "Audio cache" option from Directories Preferences due to frequent crash reports. All data operations will now be written to disk and not to RAM.
* Removed the FFmpeg "On-Demand" option from Libraries Preferences (this fixes Audacity not building if configured --without-ffmpeg).
* Compilation: Progress on making the Modules feature mainstream. Modules can now be individually enabled and disabled in Preferences.


Changes since version 2.0.0:

Bug fixes for:

* Interface:
* Selection Toolbar: a value for the previous whole second displayed if the value was close to a whole second.
* Finding zero crossings could cause the selection to expand into white space at either side of the clip.
* Clips did not drag to another track if mouse was over a selection.
* Mixer Board: Rendering four tracks resulted in a redundant Track Strip followed by a crash.

* Imports, Exports and Files:
* Exporting to WAV or AIFF led to a "Libsndfile says" error or corrupted output due to order of metadata in imported files.
* (Mac) Fixed crashes importing MP3 files on PPC machines.
* (Linux Ubuntu) .Aup files could not be associated with Audacity (they opened in the web browser instead).

* Effects and Analysis:
* Normalize: Fixed issues where normalization could be to wrong value if applied with DC offset correction, or if applied to "read-directly" WAV and AIFF files before On-Demand completed.
* Sliding Time Scale: fixed an audible discontinuity at the beginning of the processed selection; fixed a serious quality problem on Linux 64-bit.

* Other miscellaneous bug fixes, including fix to prevent zooming with mouse wheel or ball scrolling the content off-screen,

Changes and Improvements:

* Shortcuts can now be added in Keyboard Preferences to items in the Generate, Effect or Analyze menus, including user-added plug-ins.

* Nyquist Effect plug-ins can now be added to Chains.

* New "Paulstretch" effect for extreme slowdown without pitch change.

* New "Sample Data Export" Analyze effect for exporting a file containing amplitude values for each sample in the selection.

* New Preference (off by default) to import files On-Demand (without seek ability) when using the optional FFmpeg library.

* New Preference (off by default) to retain labels when deleting a selection that snaps to the label without extending past it.

* (Windows installer) New option to reset Preferences on next launch.

* (Mac) Audacity now has excellent compatibility with the VoiceOver screen reader. For details, please see: http://manual.audacityteam.org/help/manual/man/accessibility.html#mac .

* CleanSpeech Mode (no longer supported) will not now be enabled even if it was enabled by an earlier version of Audacity.

* Added Serbian (Latin and Cyrillic) translations.


Changes since version 1.3.14 Beta

Bug fixes for:

* Interface:
* Fixed playback speed and synchronization problems when dragging clips or tracks between tracks having different sample rates.
* (Windows) Removed a crash risk where shortcuts could be used to record or import in one project while importing or exporting in another.

* Imports and Exports:
* Fixed crashes when changing the sample format of read-directly WAV or AIFF files using the Track Drop-Down Menu.
* Fixed a crash importing MP3 files that had duplicate metadata tags (this is a bug in current libsndfile which has been patched in Audacity; MP3 files mislabeled as WAV which have duplicate tags will still crash Audacity on Linux if Audacity has been compiled against an affected version of system libsndfile).
* Fixed an issue where excessively high or corrupted sample values in the audio could corrupt exports from the start of the problem for the rest of the file, and could corrupt the rest of the project.
* (Linux) Fixed Audacity could not be compiled against FFmpeg 0.7.x and 0.8.x.

* Effects and Analysis:
* Fixed crash on launch when using "Ambisonic Decoders (PC)" VST plug-ins and other plug-ins that enable additional floating point exceptions.
* Fixed Plot Spectrum background could be transparent on some machines.
* Bug fixes for Click Track, High Pass, Low Pass and Vocal Remover.
* Chirp, Tone and Silence generators now remember their settings.

* Other miscellaneous bug fixes.

Changes and Improvements:

* New Interface preference to show the track name in the display (this
is off by default).
* Longer default Playback preference for effects preview and preview
before cut.
* Restored use of Page Up and Page Down to scroll horizontally.

2.2 Summary of bug fixes and new features between 1.2.6 and 2.0.0

* Bug Fixes:

* Labels now accept lower case "z".
* (Windows Vista/7) Pressing Stop after recording could cause a crash.
* (Mac OS X) Fixed shortcut keys activating when typing in file open or save windows.
* (Mac OS X) Audacity 2.0.0 fully supports Unicode, which fixes an issue where Audacity could not work with folders having non-English characters in their name.
* (Linux) Playing existing tracks while recording in mono could cause recordings to be distorted or low-pitched.

* New features: There are dozens of new features in 2.0.0, including:

* Many effects significantly improved, especially Equalization, Noise Removal and Normalize. Vocal Remover now included plus GVerb on Windows and Mac. VAMP analysis plug-ins now supported.
* Improved label tracks with Sync-Lock Tracks feature in the Tracks Menu. Multiple clips per track. Tracks and selections can be fully manipulated using the keyboard. Many more keyboard shortcuts.
* New Device Toolbar to manage inputs and outputs. Timer Record feature. New Mixer Board view with per-track VU meters.
* Automatic Crash Recovery in the event of abnormal program termination.
* Fast "On-Demand" import of WAV/AIFF files if read directly from source. FLAC now fully supported. Added support for optional FFmpeg library for import/export of AC3/M4A/WMA and import of audio from video files.

Please visit http://audacity.sourceforge.net/about/features for a full list of features in 2.0.0. You can click Help > Manual (in web browser) in the program to read more.


Changes in version 1.3.14 Beta:

Bug fixes for:

* Interface:
* Excessive delay occurred when typing into labels in long projects.
* Last digit of TimeText controls could not be manipulated in some formats.
* (Windows, OS X) Play and Record shortcuts did not work after clicking in Device Toolbar.
* (OS X, Linux) Crash occurred if Toolbars were reset during playback or recording.

* Imports and Exports:
* MP2 files were not importable without FFmpeg library or an import rule.
* Files that could only be imported using FFmpeg imported as noise with no error message if FFmpeg was not available.
* Files containing PCM audio but an incorrect extension (such as MP3) caused a freeze.

* Effects and Analysis:
* An empty command could be added to a Chain which then displayed a Nyquist error message when run.
* Plot Spectrum didn't preserve signal level if multiple tracks were analyzed.

* Other bug fixes:
* Audacity has been provisionally fixed so that it can no longer create block files longer than the sample format or project format allows, and can no longer delete these, which led to data loss. Any overlong blocks found are preserved but "orphaned", so will appear as silence.
* Orphan block files were wrongly reported if cutting or copying to the clipboard then reopening the project in the same session.
* Fixed some crashes and incorrect movement of audio when dragging tracks.
* (Windows) Data loss is now prevented when encountering a corrupted .aup file created in ANSI builds.
* (Linux) Restore building if USE_PORTMIXER is not defined.

Changes and Improvements:

* Normalize: Faster processing and improved interface. Left-right balance in unsplit stereo tracks is now preserved by default, with a checkbox option provided to process stereo channels independently.
* Spectrograms now allow window sizes up to 32768 and frequencies up to half the sample rate (the maximum possible).
* Mix and Render now preserves clip length by not rendering white space between time zero and first audio, and preserves audio before time zero. To retain silence before the audio starts, generate silence after render.
* Grouped some Edit Menu items into "Remove Audio" and "Clip Boundaries".
* CleanSpeech Mode removed from Interface Preferences (it still runs if it was enabled in a previous Audacity but can only be turned off there).
* (OS X) Added support for AudioUnit MusicEffects (but no MIDI support).
* (Linux) Set the per-user files directory per the program name set in configure.
* (Linux) Changed the default location of the Audacity temporary directory to be in /var/tmp not /tmp, so preserving the directory between reboots.


Changes in version 1.3.13 Beta:

Bug fixes for:

* Interface:
* Cutting or copying from a track at a given sample rate into a track at another rate resulted in speed-changed audio.
* Generating inside a clip could modify the clip length or create spurious clips.
* Recorded stereo tracks were only half the height of imported or generated stereo tracks. Imported stereo files had a "1" appended to the track name.
* Edit > Region Save did not save the cursor position.
* (Windows) Projects crashed when clicking rapidly inside the interface or when applying repeated effects towards the end of audio tracks.
* (Windows) Some Unicode characters could not be typed into labels, or caused a freeze using some input methods.
* (OS X) Crash when quitting an empty project window, or when closing the main project window while a progress dialog was on screen.
* Numerous other interface fixes including Dependencies dialog, Keyboard Preferences and spurious lines drawn on waveform.

* Imports and Exports:
* Support added for later versions of the optional FFmpeg library up to current FFmpeg HEAD. This should significantly improve FFmpeg support on Linux. FFmpeg downloads for Windows and Mac updated to v0.6. This fixes mono AAC files importing as stereo, though current 0.5 versions of FFmpeg will still work.
* Both FFmpeg and LAME should now be properly detected even when other versions of those libraries exist on the system.
* New warning (on by default) for importing uncompressed audio files. Better error messages when read-directly uncompressed files are missing.
* Imported ID3v2 metadata tags were removed when exporting without the Metadata Editor appearing (for example, when using an export command in Chains). Note: As a result of this fix, ID3v1 tags must now be written by exporting using (external program) and an installed LAME.
* U-Law/A-Law files with WAV headers now use the standard 18 byte fmt chunk, so should now be recognised by most telephony applications.
* Variable bit rate MP3s exported using "MP3 Files" were larger than necessary because using the bit reservoir was disabled.
* (OS X) Files imported from iTunes could create invalid characters in the .aup project file, causing an error when re-opening the project. Note: An error "reference to invalid character number" will still occur if re-opening a project created in previous Betas that contains such characters. To fix the issue, open a back-up copy of the .aup file in a text editor, turn off word wrap, then in the line indicated in the error message, remove the string of characters that starts with &# and ends with a semi-colon (;).

* Other bug fixes:
* Nyquist effects: fixes for crashes, incorrect slider behaviour and better support for backslashes, double quotes and Unicode characters.
* (Windows and OS X) Processing of VST effects was substantially slower than in previous versions of Audacity.
* (OS X 10.5 PPC) A first-time installation of Audacity Beta would hang on launch if VST effects were detected.
* (Linux) Recordings made with the pulse device crashed or stalled when using overdub and/or software playthrough.
* (Linux) Play-at-Speed crashed at 0.08 speed or lower if Audacity was configured with libsamplerate.

Changes and Improvements:

* Control Toolbar renamed to Transport Toolbar.
* Device Toolbar (on by default) now contains all input and output device choices, including host and recording channels. Input/output choices are no longer in Mixer Toolbar on Windows XP or some older operating systems. New Transport > Rescan Audio Devices menu item to refresh the device list.
* New "Sync-Lock Tracks" feature (turned on in the Tracks menu) to allow groups of audio and/or label tracks to retain synchronisation when the track length changes.
* Equalization: New "Manage Curves" dialog for importing and exporting curves.
* Noise Removal: New "Sensitivity" slider to adjust the noise threshold, and new option to isolate noise.
* New "Extended Import" Preferences for specifying different importers to open specific file extensions.
* Improved Automatic Crash Recovery with all project changes autosaved.
* MIDI tracks can be vertically zoomed, time shifted and display bar lines. Note: the channel selection buttons are not available in 1.3.13.
* (Windows and Linux) The window Close button and other system close or shutdown commands now quit on closing the last window. File > Close now always clears to a new, empty project.
* (OS X) Simpler installer with top-level "Auadacity" folder.


Changes in version 1.3.13 RC3 (The RC release can contain CRITICAL bugs. Use version 1.13.12 Beta if you get problems):

Bug fixes for:

* Interface:
* Cutting or copying from a track at a given sample rate into a track at another rate resulted in speed-changed audio.
* Generating inside a clip could modify the clip length or create spurious clips.
* Recorded stereo tracks were only half the height of imported or generated stereo tracks. Imported stereo files had a "1" appended to the track name.
* Edit > Region Save did not save the cursor position.
* (Windows) Projects crashed when clicking rapidly inside the interface or when applying repeated effects towards the end of audio tracks.
* (Windows) Some Unicode characters could not be typed into labels, or caused a freeze using some input methods.
* (OS X) Crash when quitting an empty project window, or when closing the main project window while a progress dialog was on screen.
* Numerous other interface fixes including Dependencies dialog, Keyboard Preferences and spurious lines drawn on waveform.

* Imports and Exports:
* Support added for later versions of the optional FFmpeg library up to current FFmpeg HEAD. This should significantly improve FFmpeg support on Linux. FFmpeg downloads for Windows and Mac updated to v0.6. This fixes mono AAC files importing as stereo, though current 0.5 versions of FFmpeg will still work.
* Both FFmpeg and LAME should now be properly detected even when other versions of those libraries exist on the system.
* New warning (on by default) for importing uncompressed audio files. Better error messages when read-directly uncompressed files are missing.
* Imported ID3v2 metadata tags were removed when exporting without the Metadata Editor appearing (for example, when using an export command in Chains). Note: As a result of this fix, ID3v1 tags must now be written by exporting using (external program) and an installed LAME.
* U-Law/A-Law files with WAV headers now use the standard 18 byte fmt chunk, so should now be recognised by most telephony applications.
* Variable bit rate MP3s exported using "MP3 Files" were larger than necessary because using the bit reservoir was disabled.
* (OS X) Files imported from iTunes could create invalid characters in the .aup project file, causing an error when re-opening the project. Note: An error "reference to invalid character number" will still occur if re-opening a project created in previous Betas that contains such characters. To fix the issue, open a back-up copy of the .aup file in a text editor, turn off word wrap, then in the line indicated in the error message, remove the string of characters that starts with &# and ends with a semi-colon (;).

* Other bug fixes:
* Nyquist effects: fixes for crashes, incorrect slider behaviour and better support for backslashes, double quotes and Unicode characters.
* (Windows and OS X) Processing of VST effects was substantially slower than in previous versions of Audacity.
* (OS X 10.5 PPC) A first-time installation of Audacity Beta would hang on launch if VST effects were detected.
* (Linux) Recordings made with the pulse device crashed or stalled when using overdub and/or software playthrough.
* (Linux) Play-at-Speed crashed at 0.08 speed or lower if Audacity was configured with libsamplerate.

Changes and Improvements:

* Control Toolbar renamed to Transport Toolbar.
* Device Toolbar (on by default) now contains all input and output device choices, including host and recording channels. Input/output choices are no longer in Mixer Toolbar on Windows XP or some older operating systems. New Transport > Rescan Audio Devices menu item to refresh the device list.
* New "Sync-Lock Tracks" feature (turned on in the Tracks menu) to allow groups of audio and/or label tracks to retain synchronisation when the track length changes.
* Equalization: New "Manage Curves" dialog for importing and exporting curves.
* Noise Removal: New "Sensitivity" slider to adjust the noise threshold, and new option to isolate noise.
* New "Extended Import" Preferences for specifying different importers to open specific file extensions.
* Improved Automatic Crash Recovery with all project changes autosaved.
* MIDI tracks can be vertically zoomed, time shifted and display bar lines. Note: the channel selection buttons are not available in 1.3.13.
* (Windows and Linux) The window Close button and other system close or shutdown commands now quit on closing the last window. File > Close now always clears to a new, empty project.
* (OS X) Simpler installer with top-level "Auadacity" folder.


Changes in version 1.3.12 Beta:

Bug fixes for:

* Imports and Exports:
* AAC files could not be exported at 48000 Hz
* FFmpeg custom export window too large on 800 x 600 resolution monitors
* (Linux) WAV/AIFF exports were corrupted if overwriting an aliased file which had been imported using the command line

* Labels:
* Cutting or deleting a region in the waveform and label track did not move the labels in advance of the cut
* Incorrect behavior snapping to labels and boundaries when Snep To was enabled
* Labels can now be reversed if included with the audio selection

* Other bug fixes:
* Projects froze if files imported via On-Demand were no longer available
* Mice with high-precision scroll-wheels could cause a crash
* (Windows 7) Clicking in a file open or save dialog caused files or folders to disappear from the list, and file filtering was broken

Changes and improvements:

* More intuitive behavior when moving and resizing labels by dragging
* Export Multiple: new option to use a numerical prefix before existinglabel or track names; "Success" dialog now resizable
* New Equalization preset "Inverse RIAA", with new button to invertother curves
* Timer Record now remembers last scheduled duration
* Meter Toolbar can now be made much narrower, and so more suitable for vertical orientation
* New Preferences choice for "System" language which is used on firstrun instead of asking user to choose language
* Warning now provided if WAV/AIFF exports are not successfully completed
* (Linux) Improved icon set in compliance with freedesktop.orgIcon Theme Specification 0.6


Summary of Changes in 1.3.11:

Bug fixes for:

* Too much audio exported when exporting partial selections
* Exports via FFmpeg corrupted if included metadata; M4A now supports metadata export
* Nyquist plug-ins did not add labels to an existing label track
* Crash opening Preferences when no audio devices available
* Timer Record and Sound Activated Recording bugs
* (Windows)Installer now installs correctly over previous Audacity versions
* Miscellaneous crashes and interface issues

Improvements:

* (Windows)Higher resolution icon file
* New Sound Finder plug-in for labelling regions of audio


Changes in version 1.3.10 Beta:

Bug fixes for:

* Imports and Exports:
* Freeze importing audio files when Default View Mode set to Pitch (EAC)
* Simultaneous On-Demand imports sorted incorrectly
* WAV or AIFF files imported as noise if Preferences set to copy in the data at 24-bit quality
* WMA exports corrupted if they contained metadata
* Metadata Editor appeared before the Export window when exporting to any format

* Effects:
* Crash or hang using Equalization on longer tracks
* Reverse did not reverse clip boundaries
* Nyquist: * Excessive memory consumption led to slow processing orcrashes * Values appearing in Nyquist effects text boxes were notalways the default or previously entered values * Errors running Nyquist effects in European locales wherecomma used as decimal separator
* VST effects remained in Effect menu even when re-scanned and no longer available
* Truncate Silence produced incorrect results if silences spanned a block boundary

* Other bug fixes:
* Spurious "not writable/disk full" errors when saving projects
* Playing, rendering or exporting multiple tracks led to desynchronised playback or loss of audio data
* Crash opening Preferences when no recording and/or playback devices enabled or connected
* Preferences window: OK button did not respond to ENTER when a tab selected in left-hand panel
* Mixer Board solo button handling
* (Windows) After a period launching correctly, Audacity sometimes did not come up on top at launch
* (Mac OS X) Correctly installed Help folder could not be found
* (Mac OS X and Linux) Output slider could affect VU playbackmeter which then did not reflect actual waveform volume level
* (Linux) Undoing or redoing a label edit could cause a crash

Changes and improvements:

* Linked audio and label tracks disabled until a future Beta version so they can be bug fixed
* Input volume slider will be disabled if it doesn't have proper control of system slider; use the system slider instead
* Proper support for copying/pasting label-with-audio including label text; new Edit > Paste Text to New Label menu item to paste system clipboard
* Contrast Tool now modeless, more intuitive handling of multiple project windows, various other minor improvements


New in Audacity 1.3.9

Bug fixes for:

* Crash, slow launch or excessive CPU/memory use arising from automatic VST support:
o VST instrument plug-ins should now be correctly ignored
o VST effects now scanned only at start of first session that detects them, then cached
o Effects are now not loaded or opened until needed
o New "Effects" tab in Preferences to enable/disable VST effects and enable VST rescan on next launch
* Default View Mode now works
* Chains now always apply their stored parameters rather than those last used in Effect menu
* Non-MP3 files imported via drag or Recent Files caused crash if filter in file open window set to MP3
* AAC exports (using the optional FFmpeg library) silenced
* Generating audio always fitted the project in the window; fit now done only if generating in new track
* View menu items/shortcuts incorrectly disabled when playing or recording
* DTMF generator defaulted to zero duration on open
* Unwanted interactions between linked audio and label tracks
* (Windows XP)Failure to launch on some machines due to "incorrect configuration" issue
* (Windows)Crash importing a stereo file while a screen reader such as JAWS is running
* (Mac OS X) :
o Audio Units effects applied to all tracks in project even if not selected
o QuickTime importer now handles files greater than 16-bit or 64000 Hz
* Various other interface bugs

Improvements:

* Compressor: new option to compress based on peaks, improved attack and decay time support
* Mixer Board: improved design, more responsive meters and now interacts fully with Track Panel in main window


New in Audacity 1.3.8

New Features
Effects and Analysis:

* VST Effects now display GUI by default
* Faster Equalization and Noise Removal; improved Truncate Silence and Click Track
* Chains applied to files now clear temporary data after processing each file
* Updated Nyquist implementation with support for SAL syntax and improved memory management
* Plot Spectrum now analyzes up to 237.8 seconds of audio, with separate windows for each project and improved display; new preferences for Spectrograms
* Contrast Analysis tool now modeless for easier use

Interface:

* Draft Manual/Quick Help included in Windows and Mac installers
* New "Mixer Board" view with per-track VU meters
* Mute, solo, gain, pan and track height saved in projects
* More compact Preferences window with easier-to-use Keyboard tab and new toolbars shortcuts
* New Screenshot Tools and improved screen reader support

Other:

* Record more than 16 channels (hardware/drivers permitting)
* Improved support for non-mmap ALSA devices such as PulseAudio
* 32-bit float data over 0 dB now handled without clipping
* "Stop" option when importing preserves already imported data
* AMR NB export now supported if the optional FFmpeg library is installed
* Faster waveform drawing and better response in multi-track projects

Bug fixes for:

* Export Multiple: failed if empty label encountered; files silenced if overwriting imported WAV files without copying them in
* Metadata Editor hidden if it was on a now unavailable second monitor
* Misaligned audio after "Split New" or Noise Removal effect
* Incorrect label movement and paste with linked audio and label tracks
* Equalization, Cut Preview and Advanced Mixing Options dialogue
* (Linux) Mixer Toolbar should now adjust levels and select input sources properly
* "Audio cache" preference caused crashes - data is now only cached in memory if available RAM is above a level defined in preferences
* Various other crashes


Changes in version 1.3.7 Beta

Cross-platform Bug Fixes:
* Muting/soloing caused incorrect channel results in exported stereo files
* Noise Removal and all Nyquist effects pasted the original unmodified audio at the end of the modified region
* Noise Removal inserted a tail of low level noise at the end of the modified region
* Nyquist and Compressor plug-ins did not display moving bars in progress dialogue and over-estimated "Remaining Time"
* Cancelling Nyquist effects deleted unprocessed audio
* Change Speed and Change Tempo failed to modify the original selection length
* Cut lines invisible
* Fixed various bugs importing multi-stream files via FFmpeg
* File > Export as WAV could be corrupted if overwriting an imported WAV read direct from the file
* Export multiple "Other uncompressed files" choice always produced 16-bit PCM audio irrespective of chosen options.
* MP3 export usually produced a 128 kbps constant bit rate file irrespective of chosen options; reported length often incorrect
* MP3 ID3 Genre tag misread on import if the genre list in Metadata Editor was opened and saved
* Exported metadata tags in MP3, OGG and FLAC often not seen by player software - now substantially improved
* WMA exports (via FFmpeg)corrupted if metadata tags included
* Some multi-channel recording devices that previously recorded more than two channels no longer did so
* Generated audio did not fit in window
* No warning was given when saving an empty project
* Beep on completing longer process did not work on many systems
* fixed crashes importing lists of files (.LOF), in Meter Toolbar and Change Speed

Platform-specific Bug Fixes:
* Windows Vista: crash opening Preferences with no sound devices enabled and connected
* Mac OS X and Linux: * Spurious clipping at start of playback
* Labels did not accept certain legal characters
* Shortcuts did not work after running effects
* Project Rate did not change to respect rate of first imported file if that rate was unsupported
* Mac OS X only:
* Crash resizing project window
* Menu items became inactive or visibly corrupted
* File > Open dialogue did not always work on OS X 10.4
* Impossible to set independent Command and Control shortcuts that shared the same key
* Freeze importing uncompressed files via On-Demand (please report any remaining instances of this to:feedback@audacityteam.org)
* Portable settings were not picked up, instead settings were taken from the default location
* Fixed unavailability of FFmpeg installer

New Features:
* F11 Full Screen mode
* High-quality "Sliding Time Scale/Pitch Shift" effect
* Audio Contrast Analyzer for testing audio on the internet for WCAG2 accessibility compliance.
* Windows: sound devices can now be opened using the more efficient DirectSound API

Other changes:
* Latency correction should be improved for many users by employing a fixed rather than variable correction
* Grouping of Effects into categories turned off until a way is added for users to do so themselves
* Numerous minor interface improvements such as Metadata Editor navigation, new "hh:mm:ss + hundredths" selection format
* Note: Windows users wanting to export MP3 files will require the latest version of the LAME encoder from http://lame.buanzo.com.ar/


Changes in version 1.3.6a6

Interface:
* Note Track now supports export as a MIDI file
* Linked audio and label tracks: improved support when source and target number of tracks differ and when cross-pasting different track types

Import / Export:
* On-demand now supports project saving during summarising; reverts to stripey background; fixed some crashes due to threading issues
* Exports: Single AAC filter (M4A LC profile) with quality settings slider; removed FFmpeg formats already supported by Audacity; added explicit GSM 6.10 (WAV) filter; current project rate now used for all exports, with check for format-invalid rates; improvements to metadata support

Effects:
* LV2 plug-ins: added support (OS X and Linux only) for using synths as tone generators, scale point labels, grouped controls and i18n translations


Beta version 1.3.5

Recording / Playback

* Several bugs fixed so that latency correction should be better, and more devices work correctly.
* Problems with invalid sample rates under Linux should be much rarer.
* Newer version of Portaudio library.
* New feature to record onto the end of an existing track (hold Shift while clicking Record).

Import / Export

* Updated versions of Libogg, Libvorbis, Libflac, Libsndfile and Twolame libraries.
* Handling of unsupported file formats more informative.
* Handling of file names with slashes on OS X improved.
* New dialog allows replacement of illegal file name characters on all platforms.

Interface

* Improved scaling and layout for rulers and VU meters.
* Envelope fixes/improvements including full control of undo/redo.
* New keyboard shortcuts and improved menu navigation.
* Preferences:
o More intuitive tab arrangement.
o New options for mute/solo and Metadata Editor behavior.
o Language can now be changed without restart.
* Expanded Build Information tab.

Effects

* New Vocal Remover plug-in, improvements for Generate effects.

Compilation

* Fixes when building Audacity with libraries disabled.
* Improvements to make Mac and Solaris builds easier.

Security

* Full fix for issue CVE-2007-6061 on systems where temporary directories can be changed by other users (thanks to Michael Schwendt).

Miscellaneous

* Updated translations for many locales.
* Several stability improvements.


November 13, 2007: Audacity 1.3.4 Released

The Audacity Team is pleased to announce the release of Audacity 1.3.4 (beta), which includes several new features and user interface improvements, such as:

* New Welcome Screen with introduction to Audacity.
* New 'Mix and Render to New Track' command.
* Support for VAMP audio analysis plug-ins.
* More keyboard shortcuts and navigation.
* Reworked solo/mute handling.
* New preference: Select all audio in project, if none selected (on by default).
* New preference: Beep on completion of longer activities.
* Envelopes: Many fixes when copying, pasting, or repeating.
* Many translation updates.
* Metadata editor added for OGG, FLAC and WAV/AIFF exports. Metadata import improved.
* Muted tracks are no longer audible in the exported mix.
* Improvements to latency correction.

http://audacity.sourceforge.net/download/beta_windows


Changes in 1.3.2 and 1.3.3:

Opening/saving formats:
* Import of audio from QuickTime (mov, aac, m4a) files is now
supported on OSX
* Metadata may be added to OGG files
* Improved export option selection
* Importing of Broadcast Wave Format (BWF) wave files now tolerated
* Additional export options added to MP3 and FLAC file formats
* Command line exporter now supported on Windows and OSX

Effects:
* EQ effect responsiveness improved
* Several enhancements to the EQ Effect
* Batch support added for the EQ effect
* New Auto Duck effect
* Added previewing to AudioUnit effects
* Much improved Noise Removal effect
* Effects previewing may now be canceled
* New DTMF Tone Generator effect
* Additional options available in Noise effect
* Improved the Tone Generation effects

Other features:
* New built-in screen capture utility
* Major speed improvement in Spectrogram rendering
* Increased support for drag and drop on OSX
* Support added for building against wxWidgets 2.8
* Support opening multiple Audacity Projects at once from Explorer on
Windows
* Improved main window sliders
* New support for snapping while selecting and sliding
* Improved track focus handling and visual feedback
* Speed improvements and handling of resizing/zooming in tracks
* Spectrum view may now be zoomed
* New internal file cache to improve handling of project files over
networks

Also:
* Many improvements to language specific translations
* Numerous stability improvements


Stable version 1.2.6

* Fixed memory leaks on Windows.
* Corrected font size problems.
* Enabled missing FLAC support.
* Fixed Mac OS X (PPC only) screen redraw issues.


Beta version 1.3.2

Usability improvements
New selection bar
New features for label tracks
Improved toolbar docking flexibility
Menu renaming and reorganization
Selection, ruler, and playback control improvements
Major improvements to some built-in effects
New Repair effect
Improved Equalization effect
Many fixes and minor improvements to other effects
Improved accessibility for the visually impaired
Improvements for screen readers, accessibility of tracks, and hot keys
Timer recording
Auto-save and automatic crash recovery
New features and bug fixes for Nyquist
Restructured Preferences dialog
Improved batch processing
File format export improvements
Intel Mac support
Many bug fixes and stability improvements


Stable version 1.2.5

Support for new file formats, including FLAC
Fixes for Mac audio problems
Fix Generate Silence bug, a crash issue, and Linux GCC build issues
Intel Mac support


1.30 Beta
The new features in Audacity 1.3 have been grouped into the following six major categories. Click on the links below for more information.

1. Collapse/Expand Tracks
2. Multiple clips per track
3. Selection Bar
4. Improved Label Tracks
5. QuickTime and Audio Units on Mac OS X
6. Other features


Changes in Audacity 1.2.4

* The File menu now includes a list of recent files.
* The "Generate Silence" effect now prompts for a length.
* Audacity is now built with Vorbis 1.1, which features better encoding quality and file compression.
* Dragging sound files into the Audacity window now works on Mac OS X and Linux, as well as Windows. (Before, it worked only on Windows.)
* Better support for certain audio devices on Mac OS X 10.4 "Tiger"
* The "View History" window can now discard old undo levels to save disk space on Windows. (This previously worked only on Linux and Mac.)
* "Preferences" command is now in Edit menu.
* "Plot Spectrum" command is now in Analyze menu.
* Opening a project file saved by a later version of Audacity displays an intelligent error message. Also, trying to import a project file (instead of open it) displays an intelligent error message.
* Audacity now compiles in Visual C++ .NET 2003.
* Other minor bug fixes.
* New or updated translations: Arabic (ar), Czech (cs), Finnish (fi), Hungarian (hu), Japanese (ja), Norwegian (nb), Slovenian (sl), Simplified Chinese (zh_CN), Traditional Chinese (zh_TW).


Changes in Audacity 1.2.3

* Windows: Fixed a bug that caused recording to stop or display incorrectly after about 50 minutes, on some Windows systems. (This was partly fixed in Audacity 1.2.2, but still didn't work on some systems.)
* Mac OS X: Fixed a major bug that caused Audacity to crash at seemingly-random times on Mac systems, especially during playback or recording.
* The Change Pitch and Change Tempo effects have been upgraded to use a new version of the SoundTouch library by Olli Parviainen, with better speed and higher quality.
* libsndfile has been upgraded to version 1.0.11. Audacity can now import Sound Designer II (SDII) files.
* Fixed a bug that caused the program to run slowly when using the Envelope tool.
* Shift-clicking on a mute or solo button now un-mutes (or un-solos) all other tracks.
* Nyquist plug-ins can now accept strings as input. Also, a "Debug" button has been added to Nyquist effect dialogs, which allows you to see all of the output produced by Nyquist, for aid in debugging.


* When the audio file referenced ("aliased") by an Audacity project is missing, Audacity will now always play silence. Before, Audacity would sometimes repeat the most recent audio that was played previously.
* VU Meters will now always reset when audio I/O has stopped.
* New or updated translations: Italian (it), Hungarian (hu), Ukrainian (uk), Spanish (es). Polish (pl), Simplified Chinese (zh), Norsk-Bokmal (nb), French (fr), Russian (ru).


Changes in Audacity 1.2.2
Meter Toolbar added for monitoring volume levels during playback and recording. Click on the recording meter to monitor the input without recording.

Export Multiple - new feature that lets you export multiple files at once, either by track, or split based on labels.

Attempt to automatically correct latency in full-duplex recordings. (This does not work perfectly, and is not yet supported on all systems. It will improve in future versions.)

Fixed a serious bug that could cause data loss when you save and then reload and re-edit an Audacity project containing repeated or duplicate data.

MP3 tags dialog will only pop up the first time you export as MP3; after that it will not pop up again as long as you have filled in at least one tag.

You can now add a label at the current playback position - in the Project menu, with a shortcut of Ctrl+M.

Clicking on a label now selects all of the tracks, making it easier to use the label track to recall selections.

Windows: Fixed a crash in the Time Track "Set Rate" command.

Fixed a bug that caused problems with recordings over 45 minutes on some Windows systems.

Mac OS X: Improved support for the Griffin iMic by fixing a bug that was causing it to always record in mono instead of stereo.

Added support for Software Playthrough (listen to what you're recording while recording it, or while monitoring using a VU meter) - this makes it possible, for example, to record using one audio device while listening to it play through a separate device.

Unix/Linux: Fixed freeze caused by captured mouse when audio device hangs. (Audacity may not respond, but it will no longer freeze all of X.)

Fixed a cosmetic bug that caused improper waveform display if you tried to open an Audacity project saved on a different platform (e.g., copying a project from a Mac to a PC).

Fixed bug that could cause instability when pasting, splitting, or duplicating a label track.

You can now change the font of a label track by choosing "Font..." from the label track's pop-up menu.

Basic printing support has been added. Currently it scales the entire project to fit exactly on one page. Try printing in landscape orientation for best results.

Mac OS X and Windows: Audacity ships with a newer version (1.0.1) of the Ogg Vorbis encoder. Vorbis compression will now have higher quality and smaller file sizes.

Fix a bug that occasionally caused crashes when applying effects to split tracks.

Zoom In / Zoom Out now properly disable when they're not available.

Always delete temporary files created by the "Preview" feature.

Other minor bug fixes and performance improvements.



Changes in 1.2.1:

* The following translations have been added or updated: Finnish, French, Hungarian, Italian, Japanese, Norwegian, Polish, Russian.

* Fix a bug that could cause data to be lost when pasting audio from one project into another, after the first project has been saved and closed.

* Fix a possible crash when opening or resizing the Equalization window, especially when using large system fonts.

* Don't allow percentages less than -100% in Change Pitch/Speed/Tempo effects (fixes a possible crash).

* Fix a crash when the temporary directory is not available on startup.

* Correctly load ID3 tags saved in Audacity project files.

* On Linux and OS X, store lockfiles in the temp directory instead of the user's home directory. This fixes problems in lab environments where users have restricted or network-mounted home directories.

* Fix a bug that prevented Nyquist effects from running when certain regional settings were activated.

* Fix a bug in the Quick Mix command that could cause old temporary files to not be deleted.

* Linux: Fix endianness problems in playback on PowerPC.

* Linux: Fix compilation problem in Nyquist on MIPS.

* Linux: Include a more recent PortAudio v19 snapshot (fixes compilation problems when building with the --with-portaudio=v19 option).

* Two new Nyquist plug-ins: "Cross Fade In" and "Cross Fade Out."

* Other minor bug-fixes.


Changes since 1.2.0-pre4:

* New cross-fade effects.

* Fix problem where samples were drawn in the wrong position when zoomed all the way in. This caused the drawing tool to move a different sample than the one under the cursor.

* Don't use id3v2.4 tags, which are not yet supported by most players. (This was fixed in 1.2.0-pre2, but appeared again by accident in 1.2.0-pre3.)

* Correctly display translated messages in the status bar.

* When the cursor is on-screen, the Zoom In button now zooms to the area around the cursor.

* Mac OS X: Fixed audio problems on the Apple PowerMac G5.

* Linux/ALSA: Work around a bug in ALSA's OSS emulation that caused Audacity's playback cursor to move too quickly.

* Microsoft Windows: The Audacity source code should now compile out of the box on Windows.

* Many new/updated translations.


Changes in 1.0:

* Mac OS:
- Audacity no longer quits when you close the last window. The menu bar remains and you can open a new window.
- Fixed bug which caused Preferences dialog not to appear on Mac OS 9 with the ATM control panel
- Fixed bug which prevented recording low sample rates on Mac OS 9 - Recognizes MP3 files by file extension and type code
- Audacity is now more stable and functional on MacOS X

* New features:
- "Save Changes" dialog added to all platforms
- Tooltips
- New keyboard shortcuts and commands
- Label tracks can now be used to mark selection regions. Adding labels uses a new command -- see the user's manual.

* Unix:
- Fixed bug which caused audio to playback too quickly (esp. on Mandrake systems).
- Fixed bug which corrupted files when you exported a file overtop of an existing one.

* Other:
- VST Effects are processed faster
- Miscellaneous bug fixes


Changes in 0.98b:

- Fixed "Noise Removal" crash

- Added "Save Changes" dialog

- Reintroduced support for ID3 tags on Windows

- More bug fixes


Changes in 0.98:

* Effects

- New Invert effect

- New Reverse effect

- Improvements to Noise Removal effect

* Bug fixes

- You can now safely copy and paste between projects.

- Fixed bugs loading, saving, and undoing envelopes.

- You're not allowed to open the same project in two different windows anymore (it just would have caused data loss).

- Projects now save the channel of each track, it's no longer forgotten

- Better handling of case when temp directory is invalid at start of program

- Doesn't overwrite a file the project was depending on anymore (it renames the old file). You can now export to a file
with the same as the file you imported without any problems.

- Save As... for a project doesn't destroy the old project anymore.

- Undo information is thrown away when you close a project, saving disk space that had been wasted in previous versions.

- Save As... recovers gracefully when you try to save to a bad location

- Duplicate of a track with an offset now works

- Fixed another crash in Amplify... (if no data is selected in one of the tracks)

- Windows: recording/playback devices are no longer reversed in the preferences!

- Windows: VST plug-ins are found no matter how Audacity is launched.

- Windows: You can now import Ogg Vorbis files.

- If recording fails, a phantom track is no longer created.

- Changing the export format now changes the menu bar.

- More minor bug fixes...

* Unix:

- New OSS code, should provide better playback and record on almost all OSS Unix systems.

- Preliminary support for the KDE/aRts soundserver (a compile-time option; must be configured to use this in place of OSS code)

- Bug fixes to "make install" script


Changes in 0.97:

* Installation/configuration

- New Windows installer

- More options in the configure script on Unix

* User interface:

- Fixed Effects menu bug that would freeze if some but not all tracks were selected.

- Added Noise Removal effect (Dominic)

- Improved click-drag zoom.

- Other bug fixes

* MacOS:

- Fixed autoscrolling bug (would sometimes appear if you release the cursor outside the window while selecting).

* Unix:

- Fixed Amplify bug (would sometimes freeze trying to open the dialog).


Changes in 0.96:

* General User Interface:

- Added mute/solo buttons

* Importing Audio:

- Fixed regression bug in 0.95 which caused stereo files to be imported as two mono tracks
- Imports MP3 ID3 tags

* Exporting Audio:

- Exporting MP3 now works, if the appropriate version of the LAME DLL is installed (Joshua)

- Allows editing of MP3 ID3 tags with export.

* Preferences:

- Added Audio I/O selectors on Mac (Dominic) and Windows (Joshua)

* Effects:

- Added progress dialog support to all effects (which also allows effects to be cancelled)

- Added support for stereo effects and effects that add or remove tracks, or require multiple passes.

- Improved Amplify effect and fixed all known bugs (Dominic)

- Improved Bass Boost effect

- Added Filter effect (Dominic)

- Added Phaser effect (Paul)

- Added Wahwah effect (Paul)


Changes in 0.95:

* Installation/Compilation:

- Improved configure script on unix systems (Joshua)

* General User Interface:

- Menu items are now disabled when unavailable

- Online help added (Dominic and Logan)

* Importing Audio:

- Lazy import added, speeding up importing of PCM files by 2x

- Added support for the Free libmpeg3 library on unix to replace the proprietary xaudio (Joshua)

- Importing MP3 and Ogg Vorbis files is now handled automatically by the Open and Import commands.

- Fixed the Import Raw Data feature, so now you can import files of almost any arbitrary format (as long as it's uncompressed).

* Main window:

- New track labels with a single integrated pop-up menu to handle all track options

- Vertical ruler added, along with preliminary support for vertical zooming

- Stereo tracks can be linked together so changes affect both tracks

- Point-sample display takes over when you zoom very far in

- Two new wave displays: a dB (logarithmic) wave display and a spectral pitch display (using enhanced autocorrelation)

* Preferences:

- New spectral display preferences

- Temp directory can be set in preferences

* Frequency display:

- Many new frequency window enhancements, including support for cepstrum, autocorrelation, and enhanced autocorrelation.

* Envelope editor:

- Envelopes are now interpolated using decibels, making cross-fades sound much better

* Effects:

- Fixed a bug that caused incompatibility with many VST plug-ins.

- Added Maximize Amplitude effect

- Added Bass Boost effect (Paul)

* Other:

- Improved memory management over long Undo histories

- Many more bug fixes


Changes in 0.94:

* Preferences dialog (Joshua Haberman)

* OGG Vorbis import (Joshua Haberman)

* Silence, Insert Silence commands

* Split and Duplicate commands

* Mac OS X support

* Supports recording on Mac OS 8 and 9

* Many bug fixes


Changes in 0.93:

* Recording (Windows, Linux)

* Displays playback/recording position indicator

* Keeps track of some preferences

* Supports arbitrary project sample rate

* Mac: opens documents from the Finder

* Floating tool palette is now dockable
(and docked by default)

* Fixed bugs in handling multiple open projects

* Fixed bugs in effects


Changes in 0.92

* Navigation Services dialog on the MacOS

* Audio playback for Linux

* Frequency Window


Changes in 0.91:

* New floating tool palette with four tools (selection,
sliding, zooming, and envelope editing) plus play and
stop buttons

* Playback now mixes tracks, and you can work with the
document while listening. The stop button works.

* Rewritten file handling functions. The main view
is no longer dependent on the wxWindows DocView
classes, so we can handle files ourselves. The
project file format is now text-based for easy
debugging. Eventually it will probably move to XML.

* Improved handling of wave tracks: as before, the data
is stored in blocks, but now, the blocks are correctly
limited to betweek n and 2n bytes each (for some n),
which guarantees editing operations always take the
same amount of time, while also ensuring that projects
don't get more fragmented over time.

* Rewritten user interface code. The shades of gray
are taken from the OS, and the project window has been
redesigned to have more consistent layout across all
platforms.

* Selecting "Open" now does the smart thing, opening a
project if you give it a project, or importing a WAV
file if you give it that.

* Flashing cursor indicates the current editing position

* Much improved ruler - besides looking nicer, the ruler
now displays the selection and the cursor.

* The zoom tool centers on the cursor so you can zoom
into wherever you are.

* Zoom menu added, and includes "Fit to Window" option

* Frequency plot window

* Improved MP3 importing

* Lots of bug fixes


Changes in 0.81

Fixes Windows Playback bug and Fade In / Fade Out bug.

Hide changelog



All features / Full description:
This is a list of features in Audacity, the free, open source, cross-platform audio editor. For full information on how to use these features, go to the help pages.

Recording
Audacity can record live audio through a microphone or mixer, or digitize recordings from cassette tapes, records, or minidiscs. With some sound cards, Audacity can also capture streaming audio.

Record from microphone, line input, USB/Firewire devices and others.
Device Toolbar manages multiple input and output devices.
Timer Record and Sound Activated Recording features.
Dub over existing tracks to create multi-track recordings.
Record at high sample rates in excess of 192,000 Hz (subject to appropriate hardware).
Record multiple channels at once (subject to appropriate hardware).
Level meters can monitor volume levels before, during and after recording. Clipping can be displayed in the waveform or in a label track.
Import and Export
Import sound files, edit them, and combine them with other files or new recordings. Export your recordings in many different file formats, including multiple files at once.

Import and export WAV, AIFF, AU, FLAC and Ogg Vorbis files.
Fast "On-Demand" import of WAV or AIFF files (letting you start work with the files almost immediately) if read directly from source. "On-Demand" import of other file formats is available with the optional FFmpeg library.
Import and export all formats supported by libsndfile such as GSM 6.10, 32-bit and 64-bit float WAV and U/A-Law.
Import MPEG audio (including MP2 and MP3 files) using libmad.
Import raw (headerless) audio files using the "Import Raw" command.
Create WAV or AIFF files suitable for burning to audio CD.
Export MP3 files with the optional LAME encoder library.
Import and export AC3, M4A/M4R (AAC) and WMA with the optional FFmpeg library (this also supports import of audio from video files).
Sound Quality
Supports 16-bit, 24-bit and 32-bit (floating point) samples (the latter preserves samples in excess of full scale).
Sample rates and formats are converted using high-quality resampling and dithering.
Tracks with different sample rates or formats are converted automatically in real time.
Editing
Easy editing with Cut, Copy, Paste and Delete.
Unlimited sequential Undo (and Redo) to go back any number of steps.
Edit and mix large numbers of tracks.
Multiple clips are allowed per track.
Label tracks with selectable Sync-Lock Tracks feature for keeping tracks and labels synchronized.
Draw Tool to alter individual sample points.
Envelope Tool to fade the volume up or down smoothly.
Automatic Crash Recovery in the event of abnormal program termination.
Accessibility
Tracks and selections can be fully manipulated using the keyboard.
Large range of keyboard shortcuts.
Excellent support for JAWS, NVDA and other screen readers on Windows, and for VoiceOver on Mac.
Effects
Change the pitch without altering the tempo (or vice-versa).
Remove static, hiss, hum or other constant background noises.
Alter frequencies with Equalization, Bass Boost, High/Low Pass and Notch Filter effects.
Adjust volume with Compressor, Amplify, Normalize and Fade In/Out effects.
Remove Vocals from suitable stereo tracks.
Create voice-overs for podcasts or DJ sets using Auto Duck effect.
Other built-in effects include:
Echo
Phaser
Wahwah
Paulstretch (extreme stretch)
Reverse
Truncate Silence
Run "Chains" of effects on a project or multiple files in Batch Processing mode.
Plug-ins
Add new effects with LADSPA, Nyquist, VST and Audio Unit effect plug-ins.
Effects written in the Nyquist programming language can be easily modified in a text editor - or you can even write your own plug-in.
Analysis
Spectrogram view modes for visualizing frequencies.
"Plot Spectrum" command for detailed frequency analysis.
"Sample Data Export" for exporting a file containing amplitude values for each sample in the selection.
Contrast Analysis for analyzing average rms volume differences between foreground speech and background music.
Support for adding VAMP analysis plug-ins.
Free and Cross-Platform
Licensed under the GNU General Public License (GPL).
Runs on Windows, Mac OS X and GNU/Linux.


Alternative to Audacity:
Adobe Audition
GoldWave
ocenaudio
Sound Forge Pro
WavePad
WaveShop
Wavosaur



Guides and How to's:
Creating .mp3 ringtones using Audacity - Read
Mini Guide - Using Audacity With VST Plugins - Read
View all guides with guide description here


Tool features, Convert:


Comments

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24 comments, Showing 1 to 24 comments
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Note when upgrading to 2.06 you will also need to upgrade the ffmpeg it uses, which you can do from the button in the program. Or you can DIY from http://lame.buanzo.org/



Posted October 01, 2014 by . Tool version 2.06 using OS WinXP
Ease of use 7 of 10 Functionality 9 of 10 Value for money 10 of 10 Overall score 9 of 10


fixed a number of audio tracks: noise removal, amplification, etc.

a must for free audio work



Posted June 05, 2014 by . Tool version 2.0.3 using OS Windows 7 64-bit
Ease of use 8 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


Note: the "RC" versions are "release CANDIDATES". They're meant for testing, not for general use. See http://audacity.sourceforge.net/ for the latest STABLE release, currently 2.02.


Posted January 19, 2013 by . Tool version 2.0.3 RC1 using OS Win2K
Ease of use 7 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 8 of 10


The best free audio editor!


Posted March 14, 2012 by . Tool version 2.0 using OS Windows 7 64-bit
Ease of use 7 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 9 of 10


I have seen lots of improvement in latest release of Audacity as recently updated to latest SVN from obsolete one. Thanks to Audacity Team and all other members for keeping it improving.


Posted July 07, 2011 by . Tool version 1.1.3.13 Beta using OS Other
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


I have no problems with: Audacity 1.3.13-beta (Unicode) - it run ok and without problems.


Posted April 01, 2011 by . Tool version 1.3.13 using OS WinXP
Ease of use 8 of 10 Functionality 7 of 10 Value for money 10 of 10 Overall score 8 of 10


Great program for editing large wav files into individual tracks, to the millisecond! converting audio from different fps WITHOUT changing pitch is also another great feature!
Wish a furture upgrade would include editing DTS audio as well...



Posted October 22, 2009 by . Tool version 1.37 using OS WinXP
Ease of use 8 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 9 of 10


I just upgraded to the latest 1.35 beta -- finally you can export directly to AC3!
Use: "Export" and choose "Save as type: external program" and then
Options: put your command line to pipe output to.
I use aften, as this: "p:\aften\aften.exe -b 128 -s 1 -w 45 -dnorm 27 - "%f"
and it created an AC3 file. Much faster and more convenient than exporting to a huge wave file and converting.
Or you can use any command line to make whatever format you like.

This feature was in the previous version, but did not actually work (in the Windows verson at least) ... now it does.





Posted May 08, 2008 by . Tool version 1.35 using OS Win2K
Ease of use 6 of 10 Functionality 9 of 10 Value for money 10 of 10 Overall score 8 of 10
Guides: http://audacityteam.org/wiki/ http://audacity.sourceforge.net/help/documentation


Audacity is my favorite software I have ever used, IMHO!
I use it daily for absolutely everything - recording, mixing, remixing, ringtones.
Cleaning up audio, making better wuality mp3's, "fixing" songs, you name it!

In the past I have tried various flavors of Cubase - liked it, but difficult to use.
Logic.... what?!? More like ILL-Logic! Pro-Tools & others are just too expensive.
I gave up other audio editors altogtether for Audacity, not to mention it's
Fuh-REE-heeee (and so are the effects & plug-ins:)!!!!

The "Timestretching" (called "Change Tempo") function is the best I have EVER used!
I love Audacity so much, I'd actually pay for another (more functional) version!
(Nice segue into....)

The only "gripes" have, or better said "things I would change", are:

1. Cutting/pasting/editing seperate audio waveforms in the SAME track.
- Currently, you have to "Split" audio, creating another track you have to scroll (sometimes way...) down to get to, then "Move Track Up" to realign with other audio. When you have a lot of tracks, this slows things down, and can get confusing. Which brings me to my next point....

2. Colors of "tracks" - different than the standard blue, per track (editable?):
- A somewhat minor gripe, but it would help differentiate tracks by sight, rather than reading the (sometimes long) name of each track, causing you to possibly edit/change/delete something you didn't really want to.

3. Auto-Save - editable, or default every 5 minutes or so...
- Another very minor issue, but if you forget, or your computer locks up/crashes... all those time-consuming edits are gone.

Can't think of anything else bad to say about it, except...
That you have to have a computer to use it!
Can't I just think about it & edit things while I'm levitating around the universe?!?
Erm.... 'nuff said! ;@b



Posted May 03, 2008 by . Tool version 1.2.6 using OS WinXP
Ease of use 10 of 10 Functionality 9 of 10 Value for money 10 of 10 Overall score 10 of 10


Wow - fantastic free tool. All i wanted to do, was trim a file to use as a rigtone. Downloaded installed, and cropped an mp3 file in about 5 minutes - thats how easy this tool is to use.

A credit to the developers - well done.
WMA support would be good - but a quick convert before import is ok.....


Well done.
Steve.



Posted December 12, 2007 by . Tool version 1.34beta using OS Vista
Ease of use 10 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 10 of 10


Generating audio files using effects OK, but I couldn't persuade it to record in stereo or to record in other than CD-compliant 44.1 kHz



Posted March 20, 2007 by . Tool version 1.2.6 using OS WinME
Ease of use 6 of 10 Functionality 6 of 10 Value for money 10 of 10 Overall score 7 of 10


Works great under Vista x64


Posted March 13, 2007 by . Tool version 1.3.2-beta using OS Vista
Ease of use 9 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 9 of 10


I have other audio editors but this is the only one that has a unique feature. You can take any WAV or MP3 file and "reverse" it so it plays backwards. Nosy parents can see if their kids are listening to music with hidden Satanic messages recorded in reverse (grin). Or, it can be used to record your OWN hidden reverse messages in audio files.

In my first experiment with it, I sucessfully "unreversed" an audio file that was saved in reverse on purpose - the Satanic ritual music found in the 1999 film, "Eyes Wide Shut." When unreversed, you hear 2 Romanian Catholic priests singing a traditional chant.



Posted February 25, 2007 by . Tool version 1.26 using OS WinXP
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


For ease of use and value for the money (free!), this app can't be beat. This seems like the perfect introduction to digital recording; at least it has been for me. I work in the music lab of a community college and see students struggling daily with more complex programs that don't necessarily have an advantage over this one. Hail Audacity!


Posted December 27, 2006 by . Tool version 1.2.6 using OS MacOSX
Ease of use 9 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 9 of 10


[quote]I have a pretty strong system and all I'm doing is recording and surfing the internet at the same time. And after 15 or 20 minutes of recording, it drops audio! I'm gonna go try something else now, 'cause this just isn't working. [quote]

No matter how good your system is, the fault is not with audacity. If you are recording while surfing, thats where the fault lies. while you are recording, dont do anything else, i bet you dont get dropped frames then



Posted October 31, 2006 by . Tool version 1.2.5 using OS WinXP
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


Under 10.4.6, versions earlier than 1.3 were a bit flakey and sometimes crashed. However, Apple's made OSX a real moving target so it's your responsibility to keep things updated.

This new 1.3 version is pretty stable. I have a hard time deciding what "Functionality" and "Ease of use" numbers to assign because the app is so rich that you really have to RTFM to get a good grasp of all that it can do. However, that being said, you probably don't need every function so it then becomes pretty easy to learn the subset of things you -do- require.

Speed is reletive but even on a dual-867MHz G4 (or a 1GHz iBook) the app is very responsive.

What else can I say? I wish I could write software like this. :)



Posted May 19, 2006 by . Tool version 1.3 using OS MacOSX
Ease of use 8 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 9 of 10


Easy to use, easy to convert to other sound formats and easy editing of sound files.


Posted April 24, 2006 by . Tool version 1.3B using OS WinXP
Ease of use 9 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


Exactly what I was looking for.

I needed a tool to merge two audio files together for a video soundtrack - turns out this was it.

Multi-track editor with envelop (volume) control and time-shift so everything could be lined up for a smooth audio transition.

Excellent.



Posted February 04, 2006 by . Tool version 1.2.4 using OS WinXP
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


Preserves perfect quality on recording, edit - trim out unwanted parts in a click, saves high quality MP3 all your recordings! What else can you ask for? Very good!


Posted April 15, 2005 by . Tool version 1.2.3 using OS WinXP
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


The new release supports latency adjustments for syncing up multi-tracks. This is now top-notch audio software - and free! Can't fault it.


Posted August 26, 2004 by . Tool version 1.2.2 stable using OS WinXP
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


Glitches in your recording means you're doing something wrong. I've had no problem with Audacity - right up to this latest release. I use it extensively, mainly for multitracking. It's a brilliant piece of free audio software. I'll take off a point, however, coz tho' it features "unlimited undo", you can only undo the last command (you can't go back, say, 5-10 steps & undo something you did back then). Also it doesn't compensate for your soundcard's latency, so when multitracking you have to manually align each track so they all play in sync. (This, however, is a common limitation in digital recording, I believe). Audacity doesn't support midi, but then I don't use midi so no big deal to me. I've compared it recently to Cubase, which I concluded was un-intuitive & unnecessarily complex - (all those steps just to "arm" a track ready for recording! bah!)... Audacity ROCKS!!!


Posted May 11, 2004 by . Tool version 1.2.1 using OS WinXP
Ease of use 10 of 10 Functionality 9 of 10 Value for money 10 of 10 Overall score 9 of 10


I've also had repeated problems with the recorder "dropping audio frames." And of course it doesn't WARN you when this happens. You have to find out the hard way - by listening to your recording back! I have a pretty strong system and all I'm doing is recording and surfing the internet at the same time. And after 15 or 20 minutes of recording, it drops audio! I'm gonna go try something else now, 'cause this just isn't working.


Posted December 26, 2003 by . Tool version 1.0.0 using OS Win2K
Ease of use 6 of 10 Functionality 3 of 10 Value for money 10 of 10 Overall score 7 of 10


I've only tried this out briefly but it looks and works great; much of the functionality of older CoolEdit 98 but it takes MP3 as source and output, also OGG.


Posted November 26, 2003 by . Tool version 1.0.0 using OS WinXP
Ease of use 10 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 10 of 10


It works pretty well. The interface takes a little bit to get used to but it takes very little use to get comfortable with. It has many buit in plugins and does a great job recording(although I have had minor problems with it dropping audio frames but that only happens occasionally and isn't that big of a concern). It also has a buit in Ogg Vorbis encoder(and supports lame.dll for MP3 encoding and buit-in FLAC support is coming in the next release). It is great vaule for its price(FREE). Overall it is a great free audio editing app that is 1 level below many professional(read: expensive) tools.


Posted June 19, 2003 by . Tool version 1.1.3 using OS Win98
Ease of use 8 of 10 Functionality 8 of 10 Value for money 10 of 10 Overall score 8 of 10
Guides: http://www.daniel.uklinux.net/tutorial/

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