| 摘要 |
PROBLEM TO BE SOLVED: To provide a microphone which realizes a desired directional characteristics and accuracy. SOLUTION: The present invention concerns a microphone, in particular for hands-free devices which, in one housing (1) provided with at least one housing opening (5), comprises two pressure-gradient capsules (6, 7), each of which has a diaphragm, with at least one, perhaps subdivided, sound entry opening (6a, 7a) connected with the front side of the diaphragm, in an acoustically conductive manner, and at least one, perhaps subdivided, sound entry opening (6b, 7b), connected with the rear side of the diaphragm, in an acoustically conductive manner. To attain a small-sized configuration and a desired directional characteristic that appears simultaneously therewith, the sound entry opening (6a, 7a) connected with the front side of the diaphragm in the acoustically conductive manner and the sound entry opening (6b, 7b) connected with the rear side of the diaphragm in the acoustically conductive manner are provided on planes (6c, 7c) of the pressure-gradient capsules (6, 7), respectively. COPYRIGHT: (C)2006,JPO&NCIPI
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