标准摘要
[中文适用范围]： 本部分IEC 61937描述了传输非线性PCM比特流的方法，这些比特流根据MPEG-4 AAC格式及其扩展（谱带复制、参数立体声和MPEG环绕声）进行编码，以及根据MPEG-D USAC格式进行编码的非线性PCM比特流，采用MPEG-4 LATM/LOAS帧格式。 [外文原描述]： IEC 61937-11:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 61937-11:2021 describes the method to convey non-linear PCM bitstreams encoded in accordance with the MPEG-4 AAC format and its extensions (spectral band replication, parametric stereo and MPEG surround), and non-linear PCM bitstreams encoded in accordance with the MPEG-D USAC format, framed in MPEG-4 LATM/LOAS. IEC 61937-11:2021 cancels and replaces the first edition published in 2010, and Amendment 1:2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) MPEG-D USAC has been added.
英文名称Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 11: MPEG-4 AAC and its extensions and MPEG-D USAC in LATM/LOAS