头戴式耳机

• 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
  音响系统设备:与便携音响设备相关的头戴式耳机和耳机
• 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.与便携式音响设备相关的耳机和头戴式耳机.最大声压级测量方法和限制考虑.第1部分: "单一包装设备"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 - matching of sets with headphones if either or both are offered separately
  音响系统设备.与便携音频设备相应的耳机和头戴式耳机.最大声压级测量方法和限值考虑.单独提供或同时提供时头戴式耳机设置的匹配