| 摘要 |
Microphone for detecting bodily sounds consisting of a sealed and rigid housing (1), the inner of which is divided into at least two cavities (2, 3) separated by an elastic membrane (4) on which a mass element (5) is placed. The cavities are connected to pressure sensitive microphone elements (6, 7), e.g. capacitive electret elements (15) with built-in impedance converters (16) interconnected in a bridge configuration. The connection between the housing (1) and the microphone elements takes place either through leads in the form of tubing (11, 12) or by mounting the microphone elements (6, 7) through openings (20, 21) in the walls of the housing. |
