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AC3Filter is a high quality free audio decoder and processor filter. It allows media players to playback movies with AC3 and DTS audio tracks. Also it can process any audio track, much of processing options allows to adjust the sound in almost any way. It is possible to upmix any audio source to 6 channels. Filter can do multi-channel and digital (SPDIF) output. It can encode any audio source to AC3 on-the-fly and send it over SPDIF to the receiver. Full description.

Free software
Win Win

Version:2.60b History
Released:

Size:4MB



8.6/10
7 votes


Guides
Read 7
comments

3557 views
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7492542
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  Latest version:
2.60b (April 05, 2013)


Download sites:
Visit developer's site

Download AC3Filter 2.60b (direct link) (4MB)


More download options:


Download AC3Filter old versions


Supported operating systems:
Windows


More information and other downloads:
Download AC3Filter tools here or AC3filter tools 1.0a mirror (direct link) here, command-line tools with AC3 encoder and decoder, SPDIF format converter, parametric filter, graphic equalizer and more.


Sections/Browse similar tools:
Codecs

AC3Filter screenshot
Click to enlarge screenshot

User options:
Email me when it has been updated    Report this tool (dead link/new version)  


Version history / Release notes / Changelog:
AC3Filter 2.6.0b
Released: 2013-04-05
FFMPEG updated to v1.1.4
Use FFMPEG for AAC decoding (should be less crashes because faad bugs).
SPDIF/AC3 encoder: encode 5.1 with back channels (used by flac for instance) like 5.1 with side channels (standard for ac3).
Serbian language added (thanks to Rancher).
Languages updated: Basque (thanks to Xabier Aramendi), Chineese (thanks to PoYang).
Bug fixed: some languages was reset to english after restart.
Installer: /noicons option works now

View full changelog



All features / Full description:
Playback:

* Watch movies with AC3 and DTS audio tracks
* Listen multi-channel (AC3/DTS) AudioCD
* Playback WAV files with AC3/DTS content, ripped from multi-channel AudioCD without any conversion of these files.
* Playback raw .AC3 and DTS files (with help of AC3File filter)


Process:

* Up-mix any audio track (even plain stereo) up to 6 channels
* Down-mix any audio track to any number of channels (to match your speaker configuration)
* If you have an external Dolby ProLogic decoder, you may use ProLogic down-mix to help DPL decoder to extract surround information
* Watch movies under poor hearing conditions (noisy environment, weak speakers, ...)
* Decrease dynamic range to watch movies at night
* Apply time shift to the audio track to synchronize audio with video.
* Adjust gain of every input/output channel independently to compensate loudness differences
* Adjust time delays for every channel to compensate different distances to loudspeakers.


SPDIF output:

* Passthrough AC3 and DTS over SPDIF without any change to external decoder
* Encode any audio to AC3 and transmit it over SPDIF
* USB sound cards supported





Guides and How to's:
No guides/tutorials, submit guides here.



Acronyms / Also Known As:
ac3filter, ac3 filter, ac3filter tools, ac3 filter tools

Comments Post comment
7 comments, Showing 1 to 7 comments
 - 

The filter merit choices are broken (for me) in version 2.3a, so I've had to go back to version 2.2a.



Posted May 31, 2012 by . Tool version 2.2a using OS WinXP
Ease of use 5 of 10 Functionality 5 of 10 Value for money 10 of 10 Overall score 7 of 10


with this update the filter no decompress ac3 audio in virtualdub or virtualdub mod.


Posted April 26, 2012 by . Tool version 2.1a using OS WinXP
Ease of use 5 of 10 Functionality 5 of 10 Value for money 5 of 10 Overall score 5 of 10


Tuesday, 17 April 2012

What a class release, What a perfection! - perfect 7.1 (8) channels surround sound decoder, and it's FREE plus Open Source!
I LuV this Developer.

Recently I was fixing my buddy's Windows system and came to know about features in this latest release. We literally started dancing when we blasted 8 channel video.

I would like to consider this release either as a Mile Stone or a Hammer Blow b'coz "The World" of Encoders and Rippers is yet not ready for 7.1 channels
Surround Sound. I am still fumbling for audio and video sync even in tuking two channels stereo. Here this decoder is 8 channels ready. Grrrrrrr!

However few things about this release...
1) Sensitivity of LFE channel in Mixer Level Bar indicator seems little bit higher than other channels, or it may be my buddy's system residual noise.
2) It would be great if Mixer Input and Output indicator Bars are provided a separate tab (page) with half-half, so sensitivity and size of bars can be higher. At present tabs are Mixer, Gain, but Mixer, Level, Gain would be better, I guess.

We already started enjoying this decoder up to maximum capacity.
Bunch of Thanks!
:)



Posted April 17, 2012 by . Tool version 2.1a using OS Other
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


It requires 5.1 channel sound card to play 5.1 (6ch) surround sound.
Otherwise set media players in stereo (2ch downmix) mode.

If any one wanna test correct hook-up of surround sound speakers. Download following DD5.1 AC3 Test file
download link : http://www.sendspace.com/file/77dqe6
(I
can appreciate if above file can be hosted on VideoHelp itself in a misc.tools section.)



Posted April 11, 2012 by . Tool version 2.1a 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 had this problem of volume way too low on my DVD playback. Finally, found the cure ! I'll make sure the word gets out !

PS Only problem is with the loads of functionnality that you can adjust for people who do not know much about it ;)



Posted November 05, 2006 by . Tool version 1.1 using OS WinXP
Ease of use 4 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


Installed it and I was able to play DVDs using the standard DVD player software that accompanies W2K (SP4). That's what I needed and it worked as advertised. Probably could do some config if I had been so inclined but, frankly, it wasn't necessary.

Don't you just love it when something so simple solves the problem?
:D



Posted July 04, 2006 by . Tool version 1.01a RC5 using OS Win2K
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10


I just have one word to describe this AC-3 filter. Amazing. It is definitely a must have tool.


Posted April 23, 2005 by . Tool version 1.01 using OS WinXP
Ease of use 10 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10

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