| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a microphone unit which is easily adaptable to the diversity of audio input devices. <P>SOLUTION: The microphone unit 1 includes: a first vibration unit 14; a second vibration unit 15; an electric circuit unit 16 for processing electric signals obtained from the first and second vibration units 14, 15; and a housing 20 for housing the first vibration unit 14, the second vibration unit 15, and the electric circuit unit 16, and including a first sound hole 132, a second sound hole 101, and a third sound hole 133. The housing 20 further includes: a first sound path 41 for transmitting sound pressure to be input from the first sound hole 132 to one surface 142a of a first diaphragm 142 and also to one surface 152a of a second diaphragm 152; a second sound path 42 for transmitting sound pressure to be input from the second sound hole 101 to the other surface 142b of the first diaphragm 152; and a third sound path 43 for transmitting sound pressure to be input from the third sound hole 133 to the other surface 152b of the second diaphragm 152. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
