Patent ID: 8879767

Claim:
A microphone assembly comprising: a base, the base having a bottom surface, the bottom surface being a single plane; at least one side wall disposed on the base; a cover coupled to the at least one side wall, wherein the base, the at least one side wall, and the cover form a cavity, the cavity having a MEMS device disposed therein; a top port extending through the cover; a first channel extending through the at least one side wall, the first channel arranged so as to communicate with the top port; a bottom port extending through the base, wherein the MEMS device is disposed over the bottom port; a second channel formed and extending along a bottom surface of the base, portions of the bottom surface of the base being exposed to the exterior of the assembly and not being in direct contact with the MEMS device, the second channel extending between and communicating with the first channel and the bottom port wherein the second channel is formed by a raised solder ring, the bottom surface of the base, and a mounting substrate, wherein the solder ring is disposed on the bottom surface, and wherein one side of the second channel is coextensive with the plane of the base and does not extend into the base; such that sound energy received by the top port passes through the first channel, the second channel, and the bottom port and is received at the MEMS device.