Rob Nowiks Audio Resource
- Site contains discussion of audio formats, related audio algorithms and general audio production techniques.
- http://rnowik.com

Lossless compression vs. speed
- Comparisons of most popular lossless audio formats.
- http://web.inter.nl.net/users/hvdh/lossless/main.htm

GSM 06.10 Lossy Speech Compression Format
- Details about the format and example source code.
- http://kbs.cs.tu-berlin.de/~jutta/toast.html

ATRAC: Adaptive Transform Acoustic Coding for MiniDisc
- ATRAC is an audio format based on psychoacoustic principles originally used for Sony MiniDisc players.
- http://www.minidisc.org/aes_atrac.html

WavPack
- Open audio codec facilitating both loseless compression and a unique hybrid compression mode.
- http://www.wavpack.com/

True Audio
- Open lossless audio codec developed with the main requirements of reasonable compression level and high operation speed.
- http://www.true-audio.com/

Speex
- Open audio codec designed for speech, part of the Xiph.org Foundation.
- http://www.speex.org/

OptimFROG
- Loseless audio compression supporting IEEE Float audio data.
- http://losslessaudiocompression.com/

Musepack
- Open audio compression format also known as MPC or MPEGPlus/MP+. Based on MPEG1 Layer-2/MP2 algorithms.
- http://www.musepack.net/

AC3Filter
- DirectShow AC3 filter.
- http://ac3filter.sourceforge.net/

The Void: PC Audio Resource
- Information about computer audio formats and sound cards.
- http://www.voidaudio.net/

Vianix Corporation
- Developed MASC technology (Managed Audio Sound Compression) memory-efficient audio compression algorithm providing voice emulation.
- http://www.vianix.com/

Study on Audio Compression
- Detailed comparison of various audio compression algorithms including ASF, RealAudio, MP3, Ogg Vorbis, MOV, and VQF.
- http://ekei.com/audio/

MPE Secure Media
- Secure streaming media format giving authors, songwriters and publishers complete control over products distributed through the internet.
- http://www.destinympe.com/

Free Lossless Audio Coder
- FLAC is an open source lossless audio codec, supports streaming, seeking and archival.
- http://flac.sourceforge.net/