Microphone module

Abstract

Disclosed is a microphone module including a casing, a microphone, a drainage structure, a waterproof membrane and a limiting member. The casing has a recess. The microphone is disposed in the casing, and corresponds to the recess. The drainage structure is disposed at the casing and includes a first channel and a second channel communicated to each other. A first sound hole of the first channel is exposed from the casing, and a second sound hole of the second channel corresponds to the microphone. A waterproof membrane is disposed in the recess and located between the microphone and the second sound hole. The limiting member is disposed in the recess and located between the microphone and the waterproof membrane.

Dependencies are inferred from the claim text.