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About: High-Efficiency Advanced Audio Coding     Goto   Sponge   NotDistinct   Permalink

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Type: yago:WikicatCompressionAlgorithmsyago:WikicatLossyCompressionAlgorithmsyago:WikicatOpenStandardsCoveredByPatentsyago:Abstraction100002137yago:Act100030358yago:Activity100407535yago:Algorithm105847438yago:Communication100033020yago:Event100029378yago:Format106636806yago:Information106634376yago:Measure100033615yago:Message106598915yago:Procedure101023820yago:PsychologicalFeature100023100yago:WikicatIECStandardsyago:WikicatISOStandardsyago:YagoPermanentlyLocatedEntityyago:Rule105846932yago:Standard107260623yago:SystemOfMeasurement113577171 New Facet based on Instances of this Class

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 the modified discrete cosine transform (MDCT) compression efficiency in the frequency domain. The usage profile HE-AAC v2 couples SBR with Parametric Stereo (PS) to further enhance the compression efficiency of stereo signals.