Spectral Band Replication: Difference between revisions

From Hydrogenaudio Knowledgebase
No edit summary
 
No edit summary
 
(8 intermediate revisions by 4 users not shown)
Line 1: Line 1:
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.
'''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.


=Additional reading:=
==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]


* [http://www.audiocoding.com/modules/wiki/?page=SBR SBR at AudioCoding]
 
[[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.

References