音频和视频同步指南第2部分:音频和视频系统同步方法

[中文适用范围]： IEC 62312系列提供了音视频同步方法的指南。本部分描述了音视频系统的系统模型以及音视频同步的通用方法。该方法排除了信号源的同步和音频重现的空间延迟。 [外文原描述]： IEC TS 62312-2:2018 gives guidelines for methods of synchronization of audio and video. It describes the system model and general methods for the synchronization of audio and video. The methods exclude the synchronization of the signal source and the spatial delay of audio reproduction. IEC TS 62312-2:2018 cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) fingerprint is newly introduced; b) addition of the synchronization information from fingerprint (SMPTE spec.); c) addition of the method for using the above information.