Bonk

Description
Bonk is a mixed mode audio compression file format and codec written by Paul Harrison. It can achieve both lossy and lossless compression of audio. It uses a simple algorithm compared to most other audio codecs and the source code is just above 1000 lines. The implementation is open source using a GPL license.

It is not under active development - the latest version (0.6) is from 2002.

Links

 * Home of Bonk