Patent ID: 9380392
Filing Date: 2016-06-28
CPC Classification: B81B,B81C,H01L,H04R

Claim Text:
1. A microphone comprising: a MEMS acoustic transducer comprising: a frame-shaped support, and a membrane including a diaphragm as a movable electrode, covering an opening in the support; an integrated circuit that amplifies the output from the MEMS acoustic transducer; and a housing that houses the MEMS acoustic transducer and the integrated circuit, wherein the housing includes a sound port bearing partition with a sound port formed therein, wherein the MEMS acoustic transducer is secured in the housing with the membrane thereof facing the inner surface of the sound port bearing partition to form a dosed space inward of the sound port bearing partition of the housing between the membrane and the sound port bearing partition, wherein the closed space communicates with the outside via the sound port and wherein the microphone further comprising: a recess provided at the center portion of a region on the inner surface of the sound port bearing partition facing the MEMS acoustic transducer, wherein the recess is smaller than the region on the inner surface facing the MEMS acoustic transducer.