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Streaming Media
MPEG Finalizes MPEG-4 High-Efficiency aacPlus Specification
Posted Mar 21, 2003 Print Version     Page 1of 1
  

Coding Technologies, leading provider of audio compression technologies for mobile, digital broadcasting and the Internet, announced that MPEG has finalized the specification for MPEG-4 High-Efficiency AAC, also known as aacPlus. Only the formal approval by the ISO's national bodies remains in the MPEG-4 standards process. As a superset of AAC, High-Efficiency AAC is both backward and forward compatible with existing AAC content and decoders. Based on Coding Technologies' Spectral Band Replication (SBR), the newly finalized spec is already available in evaluation and developer kits for immediate productization.

In independent quality testing by organizations like MPEG and the European Broadcasting Union, aacPlus outperformed all other codecs in terms of audio quality per bit. Due to this performance, SBR was selected in 2001 as reference model for bandwidth extension technologies inside MPEG. Finalized last week in the results of the 64th MPEG meeting, High-Efficiency AAC (MPEG-4 aacPlus) is part of the core effort of MPEG to keep the MPEG-4 standard the most efficient and complete coding system on the market today.

Libraries and reference source code for MPEG-4 aacPlus encoders and decoders are available on Mac OS X, Win32, Linux, as well as multiple DSPs. Developers can contact Coding Technologies directly for immediate access to evaluation kits.

(http://www.codingtechnologies.com)

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