Spectral Band Replication: Difference between revisions
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Spectral Band Replication (SBR) is a parametrical coding method developed by [ | '''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 [[AAC|HE-AAC]]) and Digital Radio Mondiale. | |||
==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.audiocoding.com/modules/wiki/?page=SBR SBR at AudioCoding] | |||
[[Category:Algorithms]] | [[Category:Algorithms]] | ||
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.