Title:
NOISE CONTROL SYSTEM, FAN STRUCTURE EQUIPPED THEREWITH, AND OUTDOOR UNIT OF AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2011/052088
Kind Code:
A1
Abstract:
Provided is a noise control system capable of creating a silenced region in which noise is reduced in a desired position in a space.
An error scanning filter (12) generates a silencing signal having a phase opposite to the phase of an acoustic signal component detected by a reference sensor, by an algorithm for adaptive control by an error scanning method, and a control speaker (13) emits the silencing signal to create a silenced region (60) near the head of a person (26) who receives the noise.
Inventors:
FUJIWARA, Susumu (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2009/068752
Publication Date:
May 05, 2011
Filing Date:
November 02, 2009
Export Citation:
Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
International Classes:
G10K11/178; F24F1/00; F24F7/013
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (KISA PATENT & TRADEMARK FIRM, The 6th Central Bldg. 19-10, Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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