Summary
Condenser microphone is designed ultra low frequency, audio frequency, for precision measurement in the ultrasonic frequency range, to maintain long stability.
There is a thing having sound pressure field frequency properties that have a free sound field characteristic in a 0degree incidence angle. Apply measurement range by you can be selected using from 1/4inch to 1inch.
Standards are conform to the [ANSI S1. 12-1967].
There is a microphone compatible with the