标准编号：ISO/IEC TS 20071-21:2015
中文名称：信息技术 用户接口组件的可访问性 第21部分：音频描述的指南
英文名称：Information technology — User interface component accessibility — Part 21: Guidance on audio descriptions
发布日期：2015-12
标准范围
This part of ISO/IEC 20071 provides recommendations for describing audiovisual content in an auditory modality for use in recorded video presentations, broadcast television, cinema, live or recorded drama,museum and art gallery exhibits, heritage tours, news, and comedies, regardless of the language and technology being used to transmit and present the recorded or live audiovisual content.This part of ISO/IEC 20071 provides guidance on the subjective nature of creating audio description.It also provides guidance for audio description developers (script writers, voice narrators, and organizations or groups responsible for delivering audio description) in faithfully and accurately representing audiovisual content.This part of ISO/IEC 20071 applies to describing audiovisual content and does not consider the devices or transmission mechanisms used to deliver the content or the audio description. These devices include,but are not limited to, televisions, computers, wireless devices, projection equipment, DVD and home cinema equipment and other forms of user interface technology. Therefore, this part of ISO/IEC 20071does not consider transcoding files for the various video outputs.This part of ISO/IEC 20071 provides guidance on how to approach user preferences, available styles and flexibility in approaches to audio description.It does not apply to static images contained in electronic documents (see ISO/IEC 20071?11 for guidance on text alternatives for images).It applies to auditory presentations intended to be transmitted or delivered simultaneously to the original audiovisual content.
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