Comment Re:iPod (Score 1) 673
dolby digital audio encoding started with the name AC-3 http://www.dolby.com/digital/ and
http://www.dolby.com/tech/ac-3mult.html .
It's not the same as AAC which was first specified as part of MPEG2 audio and is now, with some tools added, part of MPEG4 audio, too.
http://www.dolby.com/tech/ac-3mult.html
It's not the same as AAC which was first specified as part of MPEG2 audio and is now, with some tools added, part of MPEG4 audio, too.