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 [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 | 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. | ||
Revision as of 01:13, 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 is used by MP3Pro, HE AAC and Digital Radio Mondiale.