Title:
ACOUSTIC GENERATOR
Document Type and Number:
Japanese Patent JP2012209866
Kind Code:
A
Abstract:
To provide an acoustic generator that reduces variations in sound pressure in terms of a frequency characteristic of sound pressure.
The acoustic generator includes a frame 1, a resin diaphragm 3 stretched in the frame 1, a piezoelectric element 5 fixed on the diaphragm in the frame 1, and a resin 7 filling the frame 1 so as to bury the piezoelectric element 5. The frame 1 has a polygonal internal region and the piezoelectric element 5 is arranged with a center of gravity C2 of the piezoelectric element 5 offset from a center of gravity C1 of the polygon, so that variations in sound pressure are reduced.
Inventors:
KUSHIMA NORIYUKI
FUKUOKA SHUICHI
NINOMIYA HIROSHI
FUKUOKA SHUICHI
NINOMIYA HIROSHI
Application Number:
JP2011075552A
Publication Date:
October 25, 2012
Filing Date:
March 30, 2011
Export Citation:
Assignee:
KYOCERA CORP
International Classes:
H04R17/00
Domestic Patent References:
| JP2002330496A | 2002-11-15 | |||
| JP2002135893A | 2002-05-10 | |||
| JPS5448582U | 1979-04-04 | |||
| JP2010177867A | 2010-08-12 | |||
| JPS57128299U | 1982-08-10 | |||
| JP2009516460A | 2009-04-16 | |||
| JPH02214298A | 1990-08-27 | |||
| JPS54115094A | 1979-09-07 |
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