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Spectral Band Replication - Hydrogenaudio Knowledgebase
https://wiki.hydrogenaudio.org/index.php?title=SBR
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) …
Spectral Band Replication - MultimediaWiki
https://wiki.multimedia.cx/index.php/Spectral_Band_Replication
Spectral Band Replication. Spectral Band Replication or SBR is a lossy scheme developed by Coding Technologies (now part of Dolby) to efficiently reconstruct the high frequency data of an audio signal from the low frequency data. SBR is paired with a lossy audio codec (known as the core coder) at running half the target sample rate.
High-Efficiency Advanced Audio Coding - Wikipedia
https://en.wikipedia.org/wiki/High-Efficiency_Advanced_Audio_Coding
High-Efficiency Advanced Audio Coding (HE-AAC) is an audio coding format for lossy data compression of digital audio defined as an MPEG-4 Audio profile in ISO/IEC 14496-3. It is an extension of Low Complexity AAC (AAC-LC) optimized for low-bitrate applications such as streaming audio.The usage profile HE-AAC v1 uses spectral band replication (SBR) to enhance …
Parametric Stereo - Wikipedia
https://en.wikipedia.org/wiki/Parametric_Stereo
Parametric Stereo (PS) is lossy audio compression algorithm and a feature and an Audio Object Type (AOT) defined and used in MPEG-4 Part 3 (MPEG-4 Audio) to further enhance efficiency in low bandwidth stereo media. Advanced Audio Coding Low Complexity (AAC LC) combined with Spectral Band Replication (SBR) and Parametric Stereo (PS) was defined as HE-AAC v2.
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