EN 50332-1-2000
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"
音响系统设备:与便携音响设备相应的耳机和头戴式耳机.最大声音压力水平测量方法和限制考虑.第1部分:单一包装设备的一般方法