Patent Number: 8,879,767

Title: Acoustic apparatus and method of manufacturing

Abstract: A microphone assembly comprising includes a base, at least one side wall, and a cover. The side wall is disposed on the base. The cover is coupled to the at least one side wall. The base, the side wall, and the cover form a cavity and the cavity has a MEMS device disposed therein. A top port extends through the cover and a first channel extends through the side wall. The first channel is arranged so as to communicate with the top port. A bottom port extends through the base. The MEMS device is disposed over the bottom port. A second channel is formed and extends along a bottom surface of the base. The second channel extends between and communicates with the first channel and the bottom port. Sound received by the top port is received at the MEMS device.

Inventors: Wickstrom; Timothy K. (Elk Grove Village, IL)

Assignee: Knowles Electronics, LLC

International Classification: H04R 9/08 (20060101)

Expiration Date: 2019-11-04 0:00:00