标准摘要
[中文适用范围]： 该文档是此设备类定义的第 3.0 版。音频设备类定义适用于所有设备或嵌入在复合设备中的功能。音频功能内的所有音频信号始于输入端点，经过若干单元，并通过输出端点离开该功能。单元可以以各种方式操纵信号。端点代表功能与外部世界的连接。作为端点描述符的一部分，wTerminalType 字段指定了供应商建议的端点用途。例如，一对扬声器对于音乐输出比电话线更适合。此功能允许供应商确保应用程序以一致且有意义的方式使用设备。 [外文原描述]： IEC 62680-1-8:2019 is to describe in detail all the Terminal Types that are supported by the Audio Device Class. This document is considered an integral part of the Audio Device Class Specification, although subsequent revisions of this document are independent of the revision evolution of the main Audio Device Class Specification. This is to easily accommodate the addition of new Terminal Types without impeding the core Audio Device Class Specification. The Audio Device Class Definition applies to all devices or functions embedded in composite devices. All audio signals inside an audio function start at an Input Terminal, pass through some Units, and leave the function through an Output Terminal. Units can manipulate the signal in various ways. Terminals represent the connections of the function to the outside world. As part of the Terminal descriptor, the wTerminalType field specifies the vendor’s suggested use of the Terminal. For example, a pair of speakers is a more suitable target for music output than a telephone line. This feature allows a vendor to ensure that applications use the device in a consistent and meaningful way.
英文名称Universal serial bus interfaces for data and power - Part 1-8: Common components - USB Audio 3.0 device class definition terminal types