Fraunhofer IIS - Audio & Multimedia Realtime Systems - MP3: MPEG Audio Layer-3

http://wayback.archive.org/web/20061220173644/http://www.iis.fraunhofer.de/amm/techinf/layer3/

This page offers information about development, quality and technology of the most popular audio coding standard for digital music: MPEG Layer-3 (MP3)