Silicon-Based Microphone Apparatus And Electronic Device

Abstract

Embodiments of the present application provide a silicon-based microphone apparatus and an electronic device. The silicon-based microphone apparatus comprises: a circuit board provided with at least two sound inlet holes; a shielding cover covering one side of the circuit board to form an acoustic cavity; at least two silicon-based microphone chips both provided on one side of the circuit board and located in the acoustic cavity, back cavities of the silicon-based microphone chips being communicated with the sound inlet holes in one-to-one correspondence; and a differential control chip, microphone structures of all the silicon-based microphone chips being sequentially electrically connected and then being electrically connected to an input end of the differential control chip. In the embodiments of the present application, sound pickup structures of the at least two silicon-based microphone chips are used, and the back cavities of the silicon-based microphone chips are communicated with the sound inlet holes in one-to-one correspondence, such that acoustic waves all act on the silicon-based microphone chips to implement multi-collection of acoustic waves from one sound source or separate collection of acoustic waves from different sound sources; and then the differential control chip is used to further perform differential processing on mixed electric signals, thereby implementing noise reduction.

Dependencies are inferred from the claim text.