Title:
NOISE MASKING DEVICE
Document Type and Number:
Japanese Patent JP2015135008
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a device for improving the acoustic environment in rooms of a housing complex.SOLUTION: A noise masking device includes a vibration pickup 11 as vibration detecting means for detecting vibrations inside a ventilation duct 4 that constitutes a 24-hour ventilation system installed in each apartment 2 of a housing complex, a speaker 14 installed in the apartment 2 that reproduces the vibrations detected by the vibration pickup 11, and an output regulator 13 that regulates outputs from the speaker 14 to a preset level. The device regulates the vibration noise in the ventilation duct 4 collected by the vibration pickup 11 to an appropriate volume that would not annoy residents, before introducing the noise into the apartment 2.
Inventors:
OWAKI MASANAO
Application Number:
JP2014006746A
Publication Date:
July 27, 2015
Filing Date:
January 17, 2014
Export Citation:
Assignee:
KUMAGAI GUMI CO LTD
International Classes:
E04F17/04; E04B1/82; E04H1/04; G10K11/178
Domestic Patent References:
| JP2009175534A | 2009-08-06 | |||
| JP3130260U | 2007-03-22 | |||
| JPH0285637A | 1990-03-27 | |||
| JP2012159740A | 2012-08-23 | |||
| JPH04133298U | 1992-12-11 | |||
| JPH0795681A | 1995-04-07 | |||
| JP2014066898A | 2014-04-17 |
Foreign References:
| WO2011036742A1 | 2011-03-31 |
Attorney, Agent or Firm:
Junichi Miyazono
Miyazono Yasuo
Miyazono Yasuo
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