* mp3HD is a lossless audio codec (100% bit-exact replica of CD tracks)
* Backward Compatible to mp3
* File extension .mp3
* Bitrates for music approximately 500 to 900 kbps rates (similar to other lossless codecs), depending on genre
* Embedded mp3 track and the mp3HD file share the same id3 metadata
* Encoding parameters (e.g. bit rate), ancillary data and meta data of embedded mp3 track are under control
The group also says the average mp3HD bit rate for an everyday "top 40" pop song is 876 kbit/s, for a filesize of about 26 MB for a 4 minute track.
Audiophiles should be very excited for this new codec, as most mp3 players, especially the Apple iPod line, does not allow playback of lossless formats such as FLAC.