Release notes:

• Uses AC3Filter 1.52 code base and supports all new features!
• New DTS passthrough method
• Sample rate conversion
• Equalizer is back!
• Tray icon

New!

CPUMeter is a DirectShow filter that measures CPU usage of a filter chain.

Only $10

Release notes:

• CPU usage takes in account number of processors
• Center, Voice and LFE levels are synchronized across Mixer and Gains pages
• 'Decoder info' box did not work sometimes
• Slovak, Spanish and Italian translations updated

Release notes:

• Equalizer
• Spectrum analyzer
• Sample rate conversion
• spdif_test utility
• New and updated translations
• Old bugs killed, new made :)

Release notes:

• Equalizer tool - graphic equalizer
• Filter tool - parametric filter
• Gain tool - amplify/fade
• Resample tool - sample rate conversion
• WAVDiff - measure the difference between audio files
• New options & some bugs fixes
• Built on AC3Filter 1.50a code base

New! Spdifer is a DirectShow filter that allows media players to passthrough multi-channel sound to the digital (SPDIF) output without any change, so an external receiver can decode it.

Release notes:

Supports passthrough for AC3, DTS and MPEG Audio (including mp3) formats. All passthrough features of the 'big brother' AC3Filter are supported.

It was a problem with installer in AC3Filter 1.46. If you have problems with installing it, please download it again. Sorry for inconvenience.

New! AC3Filter tools is a set of command-line utilities for manipulating audio files.

Release notes:

• Initial release
• Built on AC3Filter 1.46 code base

New! This plugin allows CoolEdit / Adobe Audition to read AC3 and DTS files and write AC3 files.

Release notes:

Syltran lake (Elbrus region)

• Initial release
• Built on AC3Filter 1.46 code base
• Reads AC3 and DTS files
• Writes mono/stereo AC3 files (bitrate ajustable)

Release notes:

Elbrus mountain (July 2007)

• AC3 encoder bitrate is now ajustable
• Korean translation added (thanks to starcodec)
• Upmixing of Dolby Surround files works now (thanks to Stefan Schott)
• MPEG Audio Joint stereo playback fixed (thanks to Daniel Bechter)
• Problem with decimal point in mixing matrix on some non-english Windows (thanks to Marcin Hencz)

Maybe you’ve seen many good Open Source projects that are no longer maintained. One of the many reasons for that may be lack of contribution. In fact, there are many one-man projects out there. Most of any program’s users are just that, users, not developers. Nevertheless, average users still can contribute to Open Source programs to make them better.

Mixing matrix article described how matrix mixing works and some channel swapping magic. This article focuses on phase inverting. It describes what is phase inversion, how to test and fix incorrect phase and how to make pseudo-stereo effect from mono track.

This article describes how to watch movies at night and under poor hearing conditions (noisy environment, weak speakers). At the first sight settings for poor hearing conditions and at night must be different. In the first case we need to make sound louder, and at night we should be quiet. Nevertheless, in both cases we need to do the same. Paradox? Not really...

Release notes:

• ACM codec is now included into the package
• Tab labels are now translatable
• All languages available so far integrated
• Avoid poEdit '\r' warning when creating a translation file
• Warning messages about dangerous options
• Loud noise was possible after output format switch or SPDIF state change
• Audio skips problem fixed once more

Remote debugging is very hard task. To track the problem a part of a file with problem is often needed. This guide tells how to cut such part.