The Ogg Vorbis CODEC project [FAQ] [doc]
- Ogg Vorbis is a fully Open, non-proprietary, patent-and-royalty-free,
general-purpose compressed audio format for high quality (44.1-48.0kHz,
16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16
to 128 kbps/channel. This places Vorbis in the same class as audio
representations including MPEG-1 audio layer 3, MPEG-4 audio (AAC and
TwinVQ), and PAC.