DIN EN 50332-2 E:2013-11 音响系统设备:便携式音频播放设备用头戴式受话器和耳机 最大声压级测量方法 第2部分:M单独提供或同时提供, 或者作为一揽子包装设备提供但两者之间有标准化连接器 (可连接不同制造商或提供设计的部件) 时头戴式受话器设置的匹配(草案)
Sound system equipment: Headphones and earphones associated with personal music players - Maximum sound pressure level measurement methodology - Part 2: Matching of sets with headphones if either or both are offered separately, or are offered as one packa