| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small size oscillator which achieves high sound quality. <P>SOLUTION: An elastic member 20 restricting a piezoelectric element 10 is joined to a support medium 45 through a low rigid vibration member 30. A fundamental resonant frequency of an electro-acoustic transducer 50 is adjusted so as not to interfere with a resonant frequency of a body housing mounting the electro-acoustic transducer 50. Hence, fewer peaks or dips of acoustic characteristics occur and a wideband sound reproduction at large volume is achieved. <P>COPYRIGHT: (C)2012,JPO&INPIT |
