SMPTE 320M-1999和EG 26-1995的修订和合并。本标准规定了数字电视记录器音频轨道的音频通道分配，以便于识别、节目分发和交换。这些分配在表1中被描述为轨道布局“案例”，因此轨道布局可以通过说明本标准表1中引用的案例编号和字母来唯一指定。以下规范适用于程序交付规范等应用。 如果音频轨与AES3输入和输出连接之间存在一对一的对应关系，本标准规定了AES3 I/O信号对内音频信号对音频轨的分配，具体取决于AES3 I/O的工作模式，如通道状态数据所示。当AES3 I/O通过SMPTE 272M和SMPTE 299中规定的嵌入式音频时，此分配也适用。本标准涵盖在娱乐和新闻/体育环境中发展起来的实践

Revision and Consolidation of SMPTE 320M-1999 and EG 26-1995.This Standard specifies the allocation of audio channels to the audio tracks of a digital television recorder for purposes of identification, program distribution and interchange. These allocations are depicted as track layout "cases" in Table 1, such that a track layout may be uniquely specified by stating the case number and letter referenced in Table 1 of this standard. The specifications below are suitable for use in applications such as program delivery specifications.In cases where there is a one to one correspondence between the audio tracks and the AES3 input and output connections, this Standard specifies the allocation of the audio signals within the AES3 I/O signal pairs to the audio tracks, depending on the operating mode of the AES3 I/O as indicated by its Channel Status data. This allocation also applies when AES3 I/O is via embedded audio as specified in SMPTE 272M and SMPTE 299. This standard covers practices that have evolved in both the entertainment and news / sports environments