| 摘要 |
<p>The present invention provides a microphone device in which the directivity of the microphone is automatically adjustable depending on the position of the head of the speaker. The microphone device 201 mounted on a vehicle, includes a plurality of sound pickup units 203, 204 which generate an input signal depending on changes in an acoustic pressure caused by a sound wave; a position detecting unit 202 which detects a position of a head of a predetermined occupant in the vehicle; and an arithmetic processing unit 209 which performs a predetermined directive arithmetic process for the input signal based on the position of the head detected by the position detecting unit 202 and positions of the sound pickup units 203, 204.</p> |
