標準號：IEC 60318-5-2006
中文標準名稱：電聲學.人的頭部和耳朵模擬器.第5部分:借助耳塞連接耳朵的助聽器和耳機測量的2cm
英文標準名稱：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
標準類型：L31
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：L31
國際標準分類號：17.140.50
適用范圍：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.