Features of AC3 Filter 1.51 :

- Decoding of AC3/DTS/MPEG1/2 Audio Layer I/II formats
- Support of DVD, AVI/AC3, AVI/DTS, WAV/AC3 and WAV/DTS
- Audio processing for any source
- Decomposition of any source to 6 channels
- Full information about audio track format
- Support of SPDIF passthrough mode
- Multi-channel audio output from all sources on SPDIF (on-the-fly AC3 encoding)
- Per-channel amplification for all input/output channels
- Per-channel delays (for compensation of distance difference to speakers)
- Automatic gain control
- Clipping
- Dynamic Range Compression, DRC
- Level indication for input and output channels
- Matrix mixer and ability of direct modification of mixing matrix
- Dolby Surround / Pro Logic / Pro Logic II downmix

Tags :

- Audio Codec Tag 2000 may be requested when AC3 Filter is missing.
- Audio Codec Tag 8192 may be requested when AC3 Filter is missing.
- It also solves AC3 DVM codec missing, reported by AVIcodec utility.

Changes in AC3 Filter 1.51a :

- 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

UPDATE AC3Filter 1.51a:

schau mal ein thread höher ....

Changelog:

v1.60b
* Major change in this version is x64 support.
* Now filter is distributed in several editions: Full, Lite and Win9x. More about the difference.
* Much work with equalizer. Now you can work with each channel individually and with all channels at once. You can see the equalizer's real frequency response, and build your own equalizers with custom frequency bands up to one hertz precise.
* Spectrum is now synchronized with audio playback. Also, you can see the spectrum of individual channels.
* Translated to Greek (thanks to thanks to Peter Perdik and Dimitrios Topouzidis) and Slovenian (thanks to DarkHand).
* Installer is localized now.


v1.60a
+ 64bit filter
+ Lite filter version
+ Multichannel equalizer
+ Customize equalizer dialog with frequency response of the equalizer
* Spectrum synchronized with audio playback
* Localized installer
! Fixed: ACM driver sometimes crashed
! Fixed: equalizer can mute the sound sometimes
! Fixed: "incorrect value" error message may appear under the settings dialog
! Fixed: tab key now works at edit controls

New Translations:
* Slovenian, thanks to DarkHand
* Greek, thanks to Peter Perdik and Dimitrios Topouzidis

Changelog:

* Precise PCM passthrough
* Fixed: Noise on LPCM 20/24bit tracks
* Fixed: Delay settings did not work after restart.
* German translation updated (thanks to Philipp Wode)
* Japan translation added (thanks to tnetsixenon)

Changelog:

* AC3 decoding bug fixed (Issue 1)
* Channel order bug fixed (issue 43)
* Remote control using messages
* Write version number to the registry on install (issue 17)
* Command line interface for AC3Config utility (run ac3config /? for help)
* Swedish translation added (thanks to Niclas Burgren)
* French language updated (thanks to Philippe AGUESSE)