本文档定义了有线电视用MPEG-4 AAC、HE AAC、HE AAC v2和扩展HE-AAC（在本文档中统称为“AAC系列”）配置文件音频的编码约束。本文还讨论了与MPEG-4 AAC配置文件音频密切相关的MPEG-2 AAC LC配置文件音频。SCTE 193-2[1]中定义了本规范中描述的流的运输。

This document defines the coding constraints on MPEG-4 AAC, HE AAC, HE AAC v2, and Extended HE-AAC (referred to collectively in this document as the "AAC family") profile audio for cable television. It also discusses MPEG-2 AAC LC profile audio, which is closely related to MPEG-4 AAC profile audio. The carriage of the streams described in this specification is defined in SCTE 193-2 [1].