A powerful audio coding system capable of superior results at stereo bit rates below 128 kb/s.

Advanced Audio Coding, or AAC, is one of several audio coding systems specified in the MPEG-2 standard (ISO/IEC 13818-7). Dolby Laboratories first began administering the MPEG-2 AAC patent licensing program in 1998, and today Via Licensing offers a joint license for the MPEG-2 AAC patents of AT&T, Dolby, Fraunhofer IIS, Philips, and Sony.

MPEG-2 AAC is the audio format utilized in the Japanese Digital Broadcast system, known as ISDB (Integrated Services Digital Broadcasting). MPEG-2 AAC is also the basis of the audio coding technology used by XM Radio, one of two satellite radio services currently operating in the United States.

MPEG-2 AAC has been extended with additional features and capabilities in MPEG-4 AAC . However, companies creating products for the applications described above may not require these additional AAC tools, and for such applications, we offer the MPEG-2 AAC Patent License Agreement.

A copy of the MPEG-2 AAC standard can be purchased from the ISO online store (search for "13818-7").