Norm

NEN-ISO/IEC 23003-3:2012 en

Information technology - MPEG audio technologies - Part 3: Unified speech and audio coding

Volledig inclusief:

179,33

Over deze norm

Status Definitief
Aantal pagina's 278
Commissie Coding of audio, picture, multimedia and hypermedia information
Gepubliceerd op 01-04-2012
Taal Engels
This part of ISO/IEC 23003 specifies a unfied speech and audio codec which is capable of coding signals having an arbitrary mix of speech and audio content. The codec has a performance comparable to or better than the best known coding technology that might be tailored specifically to coding of either speech or general audio content. The codec supports single and multi-channel coding at high bitrates and provides perceptually transparent quality. At the same time, it enables very efficient coding at very low bitrates while retaining the full audio bandwidth. This part of ISO/IEC 23003 incorporates several perceptually-based compression techniques developed in previous MPEG standards: perceptually shaped quantization noise, parametric coding of the upper spectrum region and parametric coding of the stereo sound stage. However, it combines these well-known perceptual techniques with a source coding technique: a model of sound production, specifically that of human speech.

Details

ICS-code 35.040
35.040.40
Engelse titel Information technology - MPEG audio technologies - Part 3: Unified speech and audio coding
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