Vorbis Ogg ACM Codec

Ogg Vorbis is a fully open, non-proprietary, general-purpose compressed audio format for mid to high quality audio and music at fixed.

This places Vorbis in the same competitive class as audio representations such as MPEG-4 (AAC), and similar to, but higher performance than MPEG-1/2 audio layer 3, MPEG-4 audio, WMA and PAC.