Spectral Band Replication: Difference between revisions

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==References==  
==References==  
* [https://en.wikipedia.org/wiki/Spectral_band_replication SBR on wikipedia]
* [http://www.codingtechnologies.com/products/sbr.htm SBR at CodingTechnologies]
* [http://www.codingtechnologies.com/products/sbr.htm SBR at CodingTechnologies]
* [http://www.audiocoding.com/modules/wiki/?page=SBR SBR at AudioCoding]
* [http://www.audiocoding.com/modules/wiki/?page=SBR SBR at AudioCoding]

Latest revision as of 13:27, 23 April 2023

Spectral Band Replication (SBR) is a parametrical coding method developed by Coding Technologies to enhance audio quality at low bitrates.

Guessing the non-transmitted higher frequency range of a compressed audio file by using some helper bits (transmitted with the stream) in addition to the transmitted base band. SBR allows a restoration (not reconstruction) of the upper frequency range without lots of bits. It is used by MP3Pro, aacPlus (later standardized as HE-AAC) and Digital Radio Mondiale.

References