Spectral Band Replication (SBR) is a novel technology which significantly improves the compression efficiency of perceptual audio codecs. SBR reconstructs the high frequency components of an audio signal on the receiver side. Thus, it takes the burden of encoding and transmitting high frequency components off the encoder, allowing for a much higher audio quality at low datarates. In December 2001, SBR has been chosen as Reference Model for the MPEG standardization process for bandwidth extension. The paper will highlight the underlying technical ideas and the achievable efficiency improvements. A second focus will be a description of current and future applications of SBR.

Authors: Dietz, Martin; Liljeryd, Lars; Kjorling, Kristofer; Kunz, Oliver
Affiliations: Coding Technologies, Nuremberg,Germany ; Coding Technologies, Stockholm, Sweden(See document for exact affiliation information.)
AES Convention: 112 (April 2002) Paper Number: 5553
Publication Date: April 1, 2002
Subject: Low Bit-Rate Audio Coding

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