Testing Microphone Sensitivity
The Song Meter Configurator app includes a utility that can be used to test the sensitivity of a paired recorder's installed microphones.
It displays real-time measurements of the volume of each microphone's incoming signal in decibels relative to full scale (dBFS). When paired with a calibrated signal generator, this provides a simple and objective measurement of the microphone's sensitivity at one frequency.
See Test the Acoustic Microphone for full testing instructions.
In order to test a microphone's sensitivity, it is necessary to have a signal generator that produces a sound at a known frequency and amplitude, a fixed distance from the microphone. Without a consistent reference sound source, the Test Microphone readout does not provide a useful measurement of microphone sensitivity.