ISO/IEC 23003-3:2020

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

Standard Details

This document specifies a unified 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 document incorporates several perceptually-based compression techniques developed in previous MPEG StandardDetails: 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.

General Information

Status : Published

Standard Type: Main

Document No: ISO/IEC 23003-3:2020

Document Year: 2020

Pages: 339

Edition: 2

Section Volume:
ISO/IEC JTC 1/SC 29. Coding of audio, picture, multimedia and hypermedia information

ICS:
35.040.40 Coding of audio, video, multimedia and hypermedia information

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