注:本文件先前编号为SMPTE 299-2009；内容不变。1.1本标准定义了24位AES数字音频数据和相关控制信息到符合SMPTE 292的串行数字视频辅助数据空间的映射。音频数据来自AES3，以下简称AES音频。AES音频数据可包含根据SMPTE 337格式化的线性PCM音频或非PCM数据。并非所有符合本标准的实现都支持所有采样频率。鼓励制造商指出支持哪种采样频率（见附录D）。1.2在48 kHz或96 kHz时钟频率下采样的音频与视频锁定（同步），是演播室内应用的首选实现。作为一个选项，本标准支持同步或异步采样率为32 kHz至48 kHz的AES音频。 1.3音频通道以四个为一组进行传输，在32 kHz、44.1 kHz或48 kHz采样的情况下，最多可传输16个音频通道，在96 kHz采样的情况下，最多可传输8个音频通道。每组由唯一的辅助数据ID标识。1.4音频数据包被复用（嵌入）到Cb/Cr数据流的水平辅助数据空间，音频控制包被复用到Y数据流的水平辅助数据空间。

Note: This document previously numbered SMPTE 299-2009; Content Unchanged.1.1 This standard defines the mapping of 24-bit AES digital audio data and associated control information into the ancillary data space of a serial digital video conforming to SMPTE 292. The audio data are derived from AES3, hereafter referred to as AES audio. The AES audio data may contain linear PCM audio or non-PCM data formatted according to SMPTE 337. Not all implementations compliant with this standard may support all sampling frequencies. Manufacturers are encouraged to indicate which sampling frequencies are supported (see Annex D).1.2 Audio sampled at a clock frequency of either 48 kHz or 96 kHz locked (synchronous) to video, is the preferred implementation for intrastudio applications. As an option, this standard supports AES audio at synchronous or asynchronous sampling rates from 32 kHz to 48 kHz.1.3 Audio channels are transmitted in groups of four, up to a maximum of 16 audio channels in the case of 32 kHz, 44.1 kHz or 48 kHz sampling, and up to a maximum of 8 audio channels in case of 96-kHz sampling. Each group is identified by a unique ancillary data ID.1.4 Audio data packets are multiplexed (embedded) into the horizontal ancillary data space of the Cb/Cr data stream, and audio control packets are multiplexed into the horizontal ancillary data space of the Y data stream.