Difference between revisions of "Spectral Band Replication"
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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 | + | 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== | ||
Revision as of 01:27, 27 December 2014
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.
