Spectral Band Replication: Difference between revisions

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Spectral Band Replication (SBR) is a parametrical coding method developed by [http://www.codingtechnologies.com/ CodingTechnologies] to enhance audio quality at low bitrates.
'''Spectral Band Replication''' ('''SBR''') is a parametrical coding method developed by [[Coding Technologies]] to enhance audio quality at low bitrates.


Guessing the nontransmitted higher [[frequency]] range of a compressed audio file by using some helper bits (transmited 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]], HE [[AAC]] and Digital Radio Mondiale.
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==
* [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]


=Additional reading:=


*[http://www.codingtechnologies.com/products/sbr.htm SBR at CodingTechnologies]
[[Category:Algorithms]]
*[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