Title:
SOUND SHIELDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/158542
Kind Code:
A1
Abstract:
The present invention comprises: a glass sheet structure that is configured so as to include an intermediate layer between glass sheets and partitions an indoor space and an outdoor space; a vibration output unit that is fixed to the glass sheet structure and causes the glass sheet structure to vibrate in accordance with an input signal; an outdoor sound detection unit that detects sound from a noise source or a vibration source in a correlative relationship with sonic vibration induced in the glass sheet structure, and outputs a reference signal corresponding to the detection result; an indoor sound detection unit that detects sound in the indoor space and outputs an error signal corresponding to the detection result; and a control unit that has an adaptive filter that generates a cancel signal of a phase opposite that of the reference signal so as to minimize the error signal, and causes the cancel signal from the adaptive filter to be output by the vibration output unit.
Inventors:
AKIYAMA JUN (JP)
Application Number:
PCT/JP2022/002062
Publication Date:
July 28, 2022
Filing Date:
January 20, 2022
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
B60R11/02; G10K11/168; G10K11/178; H04R7/04; H04R7/20
Foreign References:
| US20180082673A1 | 2018-03-22 | |||
| JP2019068368A | 2019-04-25 | |||
| JP2019015825A | 2019-01-31 | |||
| US20180313138A1 | 2018-11-01 | |||
| JPH09288489A | 1997-11-04 | |||
| JP2021009668A | 2021-01-28 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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