用于电声测试的耦合腔

		型号

		人工耳/耳模拟器（6cc耦合腔不带传声器和前置放大器） - 型号 4152 Designed for measurements in the audiometric and related fields.


		型人工耳/仿真耳（IEC 60 318耦合腔，不含传声器及前置放大器） - 型号 4153 Designed for measurements in the audiometric and related fields. Fulfils the requirements of IEC 318 and has an acoustical impedance basically similar to that of the human ear.


		仿真耳/人工耳（IEC 60711耦合腔，含传声器和前置放大器） - 型号 4157 Designed for measurements on earphones coupled to the ear by ear inserts such as tubes or ear moulds or eartips.


		4930型人工乳突 Designed for the calibration of bone conduction hearing aids and bone vibrators used in audiometry.