Posted at the request of Rob Koenen, who is not able to post form his subscribed address at this time. From: Rob Koenen Sent: Thursday, 27 January, 2005 7:45 To: 'opendtv@xxxxxxxxxxxxx' Subject: RE: [opendtv] Re: The New Mac Mini is All About Movies OK, here's the deal. MP3 started its life as MPEG-1 Layer III. MPEG-1 Audio got incorporated into MPEG-2 as well, enhanced but backward compatible to MPEG-1. So MP3 is also sort of MPEG-2 Layer III. Then MPEG-2 added NBC Audio (Non Backward Compatible Audio) as a wholly new part, much like AVC is MPEG-4 part 10. NBC got renamed to AAC (Advanced Audio Coding) when the standard got its final approval, and that's how the world knows it today. Then AAC got added to MPEG-4, with some enhancements, again backward compatible. Then relatively recently, High Efficiency AAC got added as a profile. Even ore recently, MPEG added parametric stereo to the mix, making AAC even more powerful. Rob ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.