note: sci.electronics.repair removed from ng xpost list

Z Gluhak wrote:

I understand - so was I. When you buy a song from Itunes or Napster, they
made the MP3. It's 128K. It sounds very close to cd quality.

I was wondering what codec, or encoding algorithm they use to make quality
Mp3s at 128K.

See other post. They're probably passing AAC files off with an MP3
extension. There is also a fraunhofer pro codec which uses additional
spectral data to clean up the bass and treble. It can be played on MP3
player, but only players with the fhp codec will get the benefit of the
pro encoding scheme.

AFAIK, Apple uses AAC and probably just gives it the mp3 extension
instead of incrementing to mp4.


--
thelizman

teamROCS Car Audio Forums http://www.teamrocs.com/caraudio/
teamROCS Car Audio News http://www.teamrocs.com/news/
"It's about the music, stupid"

This post is Copyright (C) 2004. Reproduction of its content anywhere
other than the rec.audio.car newsgroup without the express written
permission of the author is forbidden.