团体标准 可变指向性扬声器系统主要性能测量方法 MethodsofMeasurementforMainCharacteristicsofDirectivity-changeable LoudspeakerSystems 2022-04-01发布 2022-04-01实施T/SUCA029-2022 发布 深圳市8K超高清视频产业协作联盟ICS33.160.30 M72 全国团体标准信息平台 全国团体标准信息平台 I目次 前言.............................................................................................................................................II 1范围................................................................................................................................................1 2规范性引用文件............................................................................................................................1 3术语................................................................................................................................................1 4测量条件........................................................................................................................................1 4.1一般测量条件.......................................................................................................................1 4.2测量状态...............................................................................................................................2 5指向特性........................................................................................................................................2 5.1概述.......................................................................................................................................2 5.2指向性图形...........................................................................................................................2 5.3覆盖角...................................................................................................................................2 5.4偏转角...................................................................................................................................2 6自由场和半空间自由场条件下的声压.......................................................................................3 6.1指定频带内的声压..............................................................................................................3 6.2指定频带内的声压级..........................................................................................................3 6.3指定频带内的特性灵敏度..................................................................................................3 6.4指定频带内的特性灵敏度级..............................................................................................3 6.5指定频带内的额定声压级..................................................................................................3 7有效频率范围................................................................................................................................4 7.1特性解释...............................................................................................................................4 7.2测量方法...............................................................................................................................4 8总谐波失真....................................................................................................................................4 8.1特性解释...............................................................................................................................4 8.2测量方法...............................................................................................................................4 9延迟................................................................................................................................................4 9.1特性解释...............................................................................................................................4 9.2测量方法...............................................................................................................................5 全国团体标准信息平台 T/SUCA029-2022 II前言 可变指向性扬声器系统可以按需改变指向特性，目前已越来越多的运用于各类声学场景，需要明确 这类扬声器系统的主要性能测量方法，以使其使用更加合理规范。 本文件按照GB/T1.1-2020《标准化工作导则第1部分标准化文件的结构和起草规则》的规定起 草。 本文件由深圳市8K超高清视频产业协作联