标准号:SIS SS IEC 303-1985
中文标准名称:音响效果.听力测试中耳机校准用IEC临时参考耦合器
英文标准名称:Acoustics - IEC provisional reference coupler for the calibration of earphone used in audiometry
发布日期:1985/11/15 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This Report describes an interim reference coupler for loading an earphone with a specified acoustic impedance, when calibrating audiometers, in the frequency range of 125 Hz to 8000 Hz.The sound pressure developed by an earphone is not, in general, the same in the coupler as in a person's ear. However, the IEC recommends its use as a simple and ready means for the exchange of specifications on audiometers and for the calibration of earphones used in audiometry.