AC3Filter 2.6.0b

An essential audio decoder and processor filter that allows you to tweak the sound in detail in order to playback clips with AC3 and DTS audio tracks
AC3Filter is a DirectShow filter whose purpose is to make things easier when it comes to watching movies with AC3 and DTS audio tracks. This audio decoder and processor filter does not limit you to work only with the aforementioned formats, but it actually gives you the freedom to process any audio track.

Installation process

The tool deploys a small package on your system that is installed in no time. You may opt for three different installation modes, namely Full, Compact and Custom.

The Full mode enables you to download and install all files included in the package while the Compact one skips debugging and language files. If you want to manually select the components then you can go for the Custom option.

You should pay extra attention as the utility offers to download some third-party programs which are not related to the functionality of AC3Filter.

Offline filter configuration

The tool works in an offline mode which means the configuration settings that you are currently working on are not applied in real-time to running processes. It is recommended to restart the player in order to apply the adjustments.

Straightforward GUI

The configuration panel sports a multi-tabbed layout which embeds a special window for the main dedicated parameters and leaves room for additional tabs, such as Mixer, Gains, Equalizer, SPDIF, System and About.

The tool provides support for an online help manual which offers useful information about the entire tweaking process.

Main configuration settings

AC3Filter gives you the possibility to alter the output format in terms of speaker layout (by selecting the number of speakers and their layout), sample rate and sample format.

Additionally, you may enable the SPDIF mode for switching the digital output mode, work with different preset filter settings (e.g. Loud, Standard), adjust the master and gain levels, enable the DRC feature (Dynamic range compression), and check out info about the decoder, CPU usage, input and output signal levels.

Settings for the mixing control

AC3Filter lets you work with a mixing matrix. You can manually tweak the process or activate the AutoMatrix mode in order to automatically calculate the mixing matrix based on several parameters, such as Voice, Surround, LFE levels, Normalize matrix, Voice control and Expand stereo. Plus, you can save or load the matrix that you have generated and adjust the output format.

Gains features

The application comes packed with several settings designed to help you activate and alter the Bass redirection feature by entering the cutoff frequency and picking the destination (subwoofer or front channels). What’s more, you can configure the delays for each output channel and tweak the input and output gains.

Working with the equalizer and SPDIF

You may activate or disable the equalizer, pick the channel that you want to monitor and analyze the audio data in the spectrum window. There’s support for a custom equalizer that lets you create your own frequency scale, and you may choose between several equalizer presets.

When it comes to controlling the SPDIF output parameters, you can alter the output format, view info about the decoder, select the audio tracks (AC3, DTS, MPEG Audio) that are sent to the receiver without any changes, as well as configure several options related to SPDIF/DTS conversion and mode, restrictions applied to SPDIF sample rate and others.

System features

You can select the formats AC3Filter will decode, namely PCM, LPCM, MPEG Audio, AC3, AAC, DTS, Vorbis and others. Additionally, you can use the AC3Filter as your default decoder, opt for another one or disable the filter, pick the default audio renderer, as well as show tray icon that appears when the filter is active.

A reliable and essential decoder

All in all, AC3Filter proves to be a viable software solution and an indispensable processor filter for all users who need to adjust the sound in detail.

Reviewed by on August 7th, 2014


last updated on:
August 7th, 2014, 7:58 GMT
file size:
4 MB
price:
FREE!
developed by:
Alexander Vigovsky
license type:
GPL 
operating system(s):
Windows XP / Vista / 7 / 7 64 bit
category:
C: \ Multimedia \ Audio \ Audio CD Rippers & Encoders

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softpedia rating

5.0/5

user rating 128

4.1/5
 

0/5

12 Screenshots
AC3Filter - AC3 Filter will help you correctly and smoothly playback movies with AC3 and DTS audio tracksAC3Filter - The `Output format` menu will provide users with a list of options like stereo, surround, quadro, 5 channels or Dolby Surround/ProLogicAC3Filter - Users will be able to select the Audio Stream Format and set the sample rate from 8000 up to 192000AC3FilterAC3FilterAC3FilterAC3FilterAC3FilterAC3FilterAC3FilterAC3FilterAC3Filter
What's New in This Release:
  • 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
read full changelog
 

Application description

AC3Filter is a DirectShow filter for AC3 decoding used to play AVI with AC3 audio tracks and MPEG2. It also allows med...

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