Small-array micro-electro-mechanical microphone device and noise suppression method thereof

The invention discloses a small-array micro-electro-mechanical microphone device and a noise suppression method thereof. The device comprises a mask; the circuit board is coupled with the shade and comprises a first sound hole and a second sound hole; the first microphone module comprises a first microphone and a first integrated circuit, and the first microphone extracts a first audio signal from the sound source through the first sound hole; and the second microphone module comprises a second microphone and a second integrated circuit, and the second microphone extracts a second audio signal from the sound source through the second sound hole. The first microphone and the second microphone have the same sensitivity, phase and omnidirectivity. The first integrated circuit performs a first logical operation on the first and second audio signals to generate a first summed audio signal. The first integrated circuit performs sampling delay on a second audio signal by using a first clock signal, and subtracts the