It is an extension of Low Complexity AAC ( AAC LC) optimized for low- bitrate applications such as streaming audio. HE- AAC version 1 profile ( HE- AAC v1) uses spectral band replication ( SBR) to enhance the compression. Orban coding technologies aac aacplus player plugin download. 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.
CT- aacPlus is the codec used by XM Radio for their satellite radio service. Subsequently, Coding Technologies submitted their SBR to MPEG as a basis of HE- AAC.
The progenitor of HE- AAC was developed by Coding Technologies under the trade name CT- aacPlus. CT- aacPlus combined MPEG- 2 AAC LC with the Coding Technologies invented spectral band replication ( SBR).CT- aacPlus is the codec used by XM Radio for their satellite radio service.