A Closer Look into MPEG-4 High Efficiency AAC
MPEG Spectral Band Replication (SBR) is the newest compression technology available as part of the MPEG standards. It is combined with MPEG Advanced Audio Coding (AAC) and improves coding efficiency by more than 30%. The resulting scheme is called High-Efficiency AAC (HE-AAC). This presentation will explain MPEG-SBR and its integration into the existing MPEG-4 bitstream format. The SBR technology itself as well as the implications on systems based on MPEG-4 technology are described. The signaling through MPEG-4 Systems and other transport formats is introduced and typical applications and usage scenarios will be listed.
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