Advanced Audio Coding
DeveloperMoving Pictures Experts Group

Advanced Audio Coding (AAC)

A lossy format, designed to be the successor of the MP3 format. It is said that AAC generally achieves better sound quality than the MP3 format at similar bit rates.

The quality for stereo on AAC is said to be satisfactory at 96 kbit/s in joint stereo mode; however 'hi-fi transparency' requires data rates of at least 128kbit/s.

AAC's best known use is as the default audio format of Apple's iPhone, iPod, iTunes, and the format used for all iTunes Store audio. AAC is also the standard audio format for Sony's PlayStation 3 and is supported by Sony's PlayStation Portable, latest generation of Sony Walkman, Walkman Phones from Sony Ericsson, Nseries Phones from Nokia, Nintendo's Wii and the Nintendo DSi.

High-Efficiency AAC is part of digital radio standards like DAB+ and Digital Radio Mondiale.

Last modified 18th Apr 2010