信息终端设备声压输出限值要求和测量方法信息终端设备声压输出限值要求和测量方法Sound Pressure Level Limit Requirement and Measurement Method of Telecommunication & Information Terminal Equipment
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:与便携式音频设备有关的耳机和入耳式耳机.最大声压级测量方法和极限注意事项.第1部分:“单包设备”的一般方法