Standard, capacitor or push-pull microphone. 标准、电容器式或推拉式扩音器。
Volume of high pressure coupler has been measured using a standard condenser microphone with known front cavity volume and a laser-vibrometer. 本文采用前腔体积已知的标准传声器和激光测振仪测量腔体积,并采用激光测振仪测量活塞振幅的方法来校准高压传声器校准器。