DIN EN 50332-1-2000 音响系统设备:与便携音响设备相关的头戴式耳机和耳机.最大声压水平测量方法和限制条件.第1部分:“一包设备”的一般方法
Sound system equipment: Headphones and earphones associated with portable audio equipment - Maximum sound pressure level measurement methodology and limit considerations - Part 1: General method for "one package equipment"; German version EN 50332-1:2000