The invention provides a multichannel
MEMS microphone random array and a use method thereof. The multichannel
MEMS microphone random array comprises an array board, a control board and a board-to-board connector. According to the array board, 64 MEMS microphones form a
random array, every four microphones are connected with one Codec
chip, every four Codec chips form a data line, and four
data lines are obtained. The control panel generates a total position
clock signal and transmits the total position
clock signal to the array board through the connector, the total position
clock signal is converted into four clocks on the array board, the four clocks are connected with corresponding
data lines in a
daisy chain mode, and effective connection and operation of the
system are achieved. According to the scheme, the BCLK of the digital
MEMS microphone is synchronized in a BCLK
daisy chain routing and multiple Codec
chip TDM cascading mode, and
data transmission and control are realized in combination with the board-to-board connector and related modules, so that the PCB wiring difficulty and the
system complexity and cost of a large
microphone array are reduced, and the sampling
synchronism of the
microphone is ensured.