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Patent Searching and Data


Title:
ACOUSTIC DEVICE AND ACOUSTIC DEVICE GROUP
Document Type and Number:
Japanese Patent JP2012063758
Kind Code:
A
Abstract:

To provide an acoustic device that generates a Helmholtz resonance at a desired frequency without increasing burden on each designing and manufacturing.

Each cross sectional area S of holes 21A-m, each length L of interfaces 29A-m between the holes 21A-m and air spaces 25, and each capacity V of the air spaces 25 in respective sound absorption panels 20A-m (m=1 to 3) are set to be identical for all three types. And, the cross section of the sound absorption panel 20A-m that generates resonance at a high frequency among the sound absorption panels 20A-m (m=1 to 3) has a more flattened shape.


Inventors:
Shiozawa, Yasuo
Onitsuka, Hirofumi
Application Number:
JP2011000174929
Publication Date:
March 29, 2012
Filing Date:
August 10, 2011
Export Citation:
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Assignee:
YAMAHA CORP
International Classes:
G10K11/16
Domestic Patent References:
JPS61185793A1986-08-19
JPH10110611A1998-04-28
Attorney, Agent or Firm:
松本 隆