IEC 60958-1:20 21作为IEC 60958-1:20 21 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。 IEC 60958-1:20 21描述了一种串行、单向、自时钟接口，用于消费者和专业应用的数字音频设备的互连。它提供了接口的基本结构。单独的文档定义特定于特定应用的项目。该接口主要用于承载单声道或立体声节目，使用线性PCM编码，每个样本的分辨率高达24位。当用于其他目的时，该接口能够携带除了线性PCM编码音频样本之外编码的音频数据。还提供了允许接口携带与计算机软件、多媒体技术或使用非线性PCM编码的信号相关的数据。这些应用程序的格式规范不是本文档的一部分。该接口旨在在32 kHz及以上的音频采样频率下工作。辅助信息随节目一起传送。IEC 60958-1:20 21C取代并取代了2008年发布的第三版和修正案1:20 14。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: a)支持IEC 60958-5的相关部分。

IEC 60958-1:2021 is available as IEC 60958-1:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60958-1:2021 describes a serial, uni-directional, self-clocking interface for the interconnection of digital audio equipment for consumer and professional applications. It provides the basic structure of the interface. Separate documents define items specific to particular applications. The interface is primarily intended to carry monophonic or stereophonic programmes, encoded using linear PCM and with a resolution of up to 24 bits per sample. When used for other purposes, the interface is able to carry audio data coded other than as linear PCM coded audio samples. Provision is also made to allow the interface to carry data related to computer software, multimedia technologies, or signals coded using non linear PCM. The format specification for these applications is not part of this document. The interface is intended for operation at audio sampling frequencies of 32 kHz and above. Auxiliary information is transmitted along with the programme. IEC 60958-1:2021c ancels and replaces the third edition published in 2008, and Amendment 1:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) The relevant part of IEC 60958-5 is supported.