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. | |||
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 was developed by coding technologies, and is useful for medium and high quality coding (although the latter is arguable) at low and medium data rates. It is used by [[MP3Pro]], HE [[AAC]] and digital radio mondiale. | 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 was developed by coding technologies, and is useful for medium and high quality coding (although the latter is arguable) at low and medium data rates. It is used by [[MP3Pro]], HE [[AAC]] and digital radio mondiale. | ||
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=Additional reading:= | =Additional reading:= | ||
* [http://www.audiocoding.com/modules/wiki/?page=SBR SBR at AudioCoding] | *[http://www.codingtechnologies.com/products/sbr.htm SBR at CodingTechnologies] | ||
*[http://www.audiocoding.com/modules/wiki/?page=SBR SBR at AudioCoding] | |||
Revision as of 01:12, 26 June 2005
Spectral Band Replication (SBR) is a parametrical coding method developed by CodingTechnologies 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 was developed by coding technologies, and is useful for medium and high quality coding (although the latter is arguable) at low and medium data rates. It is used by MP3Pro, HE AAC and digital radio mondiale.