Patent ID: 6885751
Filing Date: 2005-04-26
Classification: H04R

Abstract:
1. An electrostatic pressure-gradient microphone capsule adapted to be mounted essentially flush in or behind mounting surfaces, the microphone capsule comprising a capsule housing with first and second sound entry openings, a diaphragm tightly mounted on a diaphragm ring, and an electrode, wherein the capsule housing has a front side and a rear side, wherein the first and second sound entry openings are arranged on the front side of the capsule housing, wherein the first sound entry opening is acoustically conductively connected to a front side of the diaphragm and the second sound entry opening is acoustically conductively connected to a rear side of the diaphragm, and wherein the diaphragm has a plane extending at least essentially parallel to the mounting surface, and further comprising an acoustic friction on a side of the electrode facing away from the diaphragm.