Title:
SPEAKER
Document Type and Number:
Japanese Patent JP2011091876
Kind Code:
A
Abstract:
To provide an acoustic diaphragm and a speaker which enrich the sound field expression and have excellent reproduction characteristics of the bass sound when a natural wood (wooden sheet) is used as a diaphragm.
The acoustic diaphragm includes: a wooden diaphragm 5; and propagation speed adjusting members 73a, 73b disposed on the surface of the wooden diaphragm 5 along a first direction crossing the center of the wooden diaphragm 5 to adjust the propagation speed at which the wooden diaphragm 5 propagates sounds through the plane of the wooden diaphragm 5.
Inventors:
IMAMURA SATOSHI
IINO JUNJI
KAMIMURA MASASHI
IINO JUNJI
KAMIMURA MASASHI
Application Number:
JP2011027798A
Publication Date:
May 06, 2011
Filing Date:
February 10, 2011
Export Citation:
Assignee:
VICTOR COMPANY OF JAPAN
International Classes:
H04R7/26; H04R7/02; H04R7/12
Domestic Patent References:
| JP2004254013A | 2004-09-09 | |||
| JPH06178386A | 1994-06-24 | |||
| JPS63190497A | 1988-08-08 | |||
| JPS6046195A | 1985-03-12 | |||
| JPH0344996U | 1991-04-25 | |||
| JPH0164290U | 1989-04-25 | |||
| JPS619995U | 1986-01-21 | |||
| JPS57119986U | 1982-07-26 | |||
| JPS574887U | 1982-01-11 | |||
| JPS5144330U | 1976-04-01 | |||
| JPS5072220U | 1975-06-25 | |||
| JPS5533753Y2 | 1980-08-11 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Shunichi Takahashi
Shunichi Takahashi