SpeakerMeasuringMeasurement Microphone Kit Free Field response characteristic 5Hz to 40kHz frequency response Complete kit of all required items Carrying case AC or battery operation Acoustic calibrator available Central to virtually every acoustic measurement is the measurement microphone. Loudspeaker testing, room analysis, and noise measurement all start with an acoustic signal. The microphone converts this acoustic signal into an electrical signal for processing in the measuring instrument. The accuracy of this conversion defines the quality of the microphone. Most measurement microphones are capacitor element types. The central element of a capacitor measurement microphone is conceptually simple: A thin metallic diaphragm is stretched over a ridged back plate. The diaphragm and back plate form……