Title:
SPEAKER AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/131705
Kind Code:
A1
Abstract:
A speaker including: a vibrating plate having a sound-emitting surface that emits sound; a drive unit that drives the vibrating plate on the basis of an audio signal indicating audio limited to a prescribed frequency band; and an acoustic member that has at least one opening part and is positioned so as to form, together with the sound-emitting surface, a space constituting a Helmholtz resonator together with said at least one opening part. The Helmholtz resonator enhances components that, among the frequency components of the sound from the sound-emitting surface, are within said prescribed frequency band, and attenuates components exceeding said prescribed frequency band.
Inventors:
MATSUOKA JUNYA (JP)
Application Number:
PCT/JP2020/045865
Publication Date:
July 01, 2021
Filing Date:
December 09, 2020
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
B60R11/02; H04R1/02; H04R1/28; H04R7/12
Domestic Patent References:
| WO2018061319A1 | 2018-04-05 |
Foreign References:
| EP3477629A1 | 2019-05-01 | |||
| US20070280497A1 | 2007-12-06 | |||
| US20150010190A1 | 2015-01-08 | |||
| JP2009118366A | 2009-05-28 | |||
| JPH09215092A | 1997-08-15 | |||
| JP2013223201A | 2013-10-28 | |||
| JP2017225110A | 2017-12-21 |
Attorney, Agent or Firm:
OHCHI INTERNATIONAL IP (JP)
Download PDF: