Electromagnetic microphone

Abstract

The present disclosure discloses an electromagnetic microphone including: a housing; a circuit board; and a sound transducer, including: a substrate including a back cavity, a vibrator mounted on a side of the substrate away from the circuit board and covering the back cavity, including: a membrane; and a magnetic component mounted on the membrane and configured to generate magnetic field; a coil located within the magnetic field of the magnetic component; a sound hole penetrated on the housing or the circuit board is configured to communicate with the back cavity; when external sound wave transmitted from the sound hole and the back cavity acts on the membrane, the magnetic component and the coil interact to generate electrical signal. The electromagnetic microphone in the present disclosure has higher sensitivity, reliability and stability.

Dependencies are inferred from the claim text.