Automatic detection method and system for double MEMS microphones based on FFT algorithm

The invention relates to the technical field of microphone detection, and discloses an automatic detection method and system for double MEMS microphones based on an FFT algorithm. The system comprises a main control module, a signal amplification module, a microphone module and an audio bus, the main control module generates a sine wave signal and sends the sine wave signal to the signal amplification module, the signal amplification module converts the sine wave signal into audio data, the microphone module collects audio data, and the master control module obtains pulse density data of the microphone module through an audio bus. By automatically detecting the double MEMS microphones, compared with a traditional detection method, the detection time can be greatly shortened, meanwhile, FFT calculation operation is adopted, the working performance of the MESM microphones is judged according to the frequency corresponding to the audio extreme value, the influence of external noise on the detection result is avo