| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technology, for an acoustic device which produces a sound using an actuator for a vibration source, capable of improving playback sound pressure and reproducing a low frequency range which has conventionally been difficult. <P>SOLUTION: The acoustic device disposes an additional load body 200 at a vibration passive part 11 which receives a vibration from an actuator part 300 which generates a vibration on the basis of an input signal and transmits the vibration to a diaphragm 7, and aims at increasing dynamic moment, decreasing a low-band resonant frequency f0, improving the playback sound pressure, and enlarging a low frequency range of a reproduction frequency. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
