How to measure the linearity of a microphone

1, first you need to confirm the frequency range of the measurement sound, it is recommended to use white noise to test, rather than a single sound frequency.

2. Fix the microphone in a better anechoic chamber and make sure that the test environment has good silence to avoid the influence of external noise.

3, the signal generator and microphone connected to the use of the signal generator to meet the requirements of the test sound, and through the spectrum analyzer will be received by the microphone sound spectrum analysis.

4. Gradually adjust the frequency of the test sound within the frequency range, and record the sound response value received by the microphone corresponding to each frequency. By comparing the responses at different frequencies, the linearity of the microphone is calculated.

5. Based on the test results, the performance of the microphone is analyzed to determine the application areas and the range of use of the microphone.