Standard No.:	GB/T 17975.3-2002
English Name:	Information technology-Generic coding of moving picture and associated audio information--Part 3:Audio
Chinese Name:	信息技术 运动图像及其伴音信号的通用编码 第3部分: 音频
Chinese Classification:	L71    Code, character set and character recognition
Professional Classification:	GB    National Standard
ICS Classification:	35.04 35.04    Character sets and information coding 35.04
Source Content Issued by:	AQSIQ
Issued on:	2002-5-8
Implemented on:	2002-10-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	11200 words
Translation Price(USD):	448.0
Delivery:	via email in 1~3 business day

本标准在GB/T 17191.3基础上规定了一下扩展：(1) 更低取样频率；(2) 多声道和多语种的高质量音频信号的编码表述和解码方法。编码器的输入和解码器的输出是和PCM标准兼容的。本标准适用于广播、传输和存储媒体。

Foreword II Foreword of ISO/IEC III Introduction IV 0.1 Extension of GB/T 17191.3 Audio Coding to Lower Sampling Frequencies IV 0.2 Low bitrate coding of multichannel audio V 1 General 1.1 Scope 1.2 Normative references 2 Technical Elements 2.1 Definitions 2.2 Symbols and abbreviations 2.3 Method of describing bit stream syntax 2.4 Requirements for Extension of GB/T 17191.3 to Lower Sampling Frequencies 2.5 Requirements for Extension of GB/T 17191.3 to Multichannel Audio Annex A (Normative) Diagrams Annex B (Normative) Tables Annex C (Informative) The Encoding Process Annex D (Informative) Psychoacoustic Models Annex E (Informative) Ancillary Data Use