A very good and very comprehensive list of audio file formats is prepared by Guido van Rossum. The list is posted regularly to comp.dsp and alt.binaries.sounds.misc, amongst others. It includes information on sampling rates, hardware, compression techniques, file format definitions, format conversion, standards, programming hints and lots more. It is also available by ftp from WWW: ftp://ftp.cwi.nl/pub/audio/index.html Text: ftp://ftp.cwi.nl/pub/audio/AudioFormats.part1,2 A useful source of software (Sox, ulaw conversion, SoundKit etc) is: http://peace.wit.com/sounds/SoundConversion/ Host: ftp.cwi.nl Directory: /pub/audio Owner: Guido van Rossum This directory contains various documents and programs having to do with sound. Some were developed locally, some were just copied here for easy reference. Introducing some of the authors: Guido van Rossum Jack Jansen K. Sjoerd Mullender Authors not at CWI: Carl Malamud [Now that's a cool address!] Lars Hamre Some older versions are retained in the directory, but not listed in this INDEX. SOX no longer lives here. It has its own home page: http://www.spies.com/Sox/ *** Attention all WWW users: the file index.html in this directory is a hypertext version of this file. *** The files are: AudioFormats.part1, The Audio File Formats FAQ regularly posted to AudioFormats.part2 the net (alt.binaries.sounds[.d], comp.dsp, news.answers). By Guido. AudioIFF1.3.hqx A MacWrite document describing the AIFF audio file format. By Apple. BICSF-info Info on the BICSF sound file system. MOD-info A textfile describing the MOD file format in even more detail than possible in the FAQ. By Lars Hamre. NIST-SPHERE A description of the NIST SPHERE file format standard, popular in the DARPA speech community. RIFF-format A textfile describing the RIFF (a.k.a. "WAV") audio file format. By Microsoft. adpcm.shar Source for a particularly fast ADPCM implementation. By Jack. anp1.1.tar.gz Some programs and guidelines to help you capture radio newscasts on SGI or Sun. Requires a fair amount of work to get running, not for the faint of heart. By Jack. ccitt-adpcm.tar.gz Source for Sun's free implementation of CCITT compression types G.711, G.721 and G.723. By Sun. cdsend1.8.tar.gz Source for a cd reading and broadcasting program for the SGI Indigo CD-ROM player which can optionally also play on the internal speakers. By Sjoerd. This also contains a version of radio that is capable of receiving CD quality audio. gsm-1.0.7.tar.gz GSM 06.10 13 kbit/s RPE/LTP speech compression library by Jutta Degener and Carsten Bormann, Technische Universitaet Berlin radio2.0.4.tar.gz Source for a set of programs to broadcast AM-quality audio over the ethernet. By Guido. tuner1.6.shar Source for a "tuner" program to go with radio (see above). Needs Motif. By Jack. (*.wav: Microsoft RIFF audio file; *.zip: MS-DOS "zip" archive; *.tar.gz: gzipped tar file; *.shar: self-unpacking shell archive; *.hqx: Macintosh BinHex 4.0; everything else: plain text.) Note: a tool to listen to Internet Talk Radio (if you know an ftp site carrying the files and have SGI Indigo hardware) can be found in ../python/itr.sgi.tar.Z. ---***---