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DATA REDUCED AUDIO CODECS

We have reviewed the quality of some of the newer audio data reduction schemes. So far we are most impressed with The FLAC (Free Lossless Audio Codec) encoder-decoder. This is open source code and is superior in quality to all of the data reduction codecs we have reviewed so far. The files encoded using this scheme are so good as to result in full cancellation of audio data when FLAC encoded and decoded Aachen Head recordings, are converted back to PCM format, inverted in phase and summed with the original audio file. A truly outstanding accomplishment. For more information go to:http://flac.sourceforge.net/
Also review the FRAUNHOFER MP3 codec (or more correctly MPEG level 1, layer 3) perceptual coder and decoder. The decoder is available at the Fraunhofer Site in Germany and has good technical data on the MP3 scheme and a wealth of MP3 information at:http://www.iis.fhg.de/amm/download/index.html#1
We think it will be well worth your time to download this decoder, particularly if you are used to the poor quality of MP3 codecs. Aachen Head recordings, which are highly demanding, seem to hold up reasonably well when coded using the Franhofer codec. Interestingly, after some analysis we have discovered that the M3u versions, which are "streamed" MP3 files do not hold up well. MPEG 2, Level 3 was never designed as a streamed format because of the decoding processor power demanded. "Aachen Head TM" recordings when played back in this "streamed" mode lose much of the sense of dimension and space. We have tried the decode on 3 systems with both AMD and Intel (tm) processors running at high speed with equally poor results.
(Click Here TO DOWNLOAD THE AGS HEADDEMO.MP3)
This file is 2.4 meg. Interestingly, when decoded properly, it sounds almost as good as the 31 meg. file it was generated from. Some artifacts are observable at low levels, but all in all it is very impressive. Download the FRAUNHOFER decoder if you do not have it and the demo file. Then, please audition this recording on a good quality audio system on loudspeakers and for a real treat, with good quality headphones. You will hear a DC10 Fly over, a Brass Choir in the round, Percussion in Real Acoustic Space, an intimate Jazz Club and the last few bars of the Score from Air Force One. Let us know what you think?
 
Our History
Our Services
Our Work Projects
Web Audio and Demo Download
Selected Graphics Samples
Our Technology
Our Clients & other Links
Our People
Our Philosophy
How to Contact us
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