| 摘要 |
PROBLEM TO BE SOLVED: To easily take out bone conduction voice oscillation as an electric signal in the most suitable condition. SOLUTION: A beam structure 11 is supported on a support member 10 where bone conduction voice oscillation is transmitted, and the bone conduction voice oscillation is taken out as an electric signal by the beam structure 11. A piezoelectric body 16 for frequency characteristics adjustment is fixed to the beam structure 11. A control circuit 17 is electrically connected to the piezoelectric body 16 for frequency characteristic adjustment, and impedance between electrodes of the piezoelectric body 16 is changed to adjust frequency characteristics of the beam structure 11. COPYRIGHT: (C)2004,JPO
|
