IEC 60318-5-2006 电声学.人的头部和耳朵模拟器.第5部分:借助耳塞连接耳朵的助听器和耳机测量的2cm

标准号：IEC 60318-5-2006
中文标准名称：电声学.人的头部和耳朵模拟器.第5部分:借助耳塞连接耳朵的助听器和耳机测量的2cm
英文标准名称：Electroacoustics - Simulators of human head and ear - Part 5: 2 cm coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts
标准类型：L31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L31
国际标准分类号：17.140.50
适用范围：This part of IEC 60318 describes an acoustic coupler for loading an earphone or hearing aidwith a specified acoustic impedance when determining its physical performance characteristics,in the frequency range 125 Hz to 8 kHz. It is suitable for air conduction hearing aidsand earphones, coupled to the ear by means of ear inserts e.g. ear moulds or similar devices.The sound pressure developed by an earphone is not, in general, the same in the coupler asin a person’s ear. However, it can be used as a simple and ready means for the exchange ofspecifications and of physical data on hearing aids and for the calibration of specified insertearphones used in audiometry.