119 音響加振された膜の非接触振動速度分布測定による音源の可視化

• 北條 春夫

  東工大・精研

• 大嶋 俊一

  東工大・精研

• 鈴木 崇

  ブリヂストン

書誌事項

タイトル別名

• Sound Source Visualization by Measuring Normal Vibration Velocity Distribution of a Film Excited by Sound Sources
• オンキョウ カシンサレタ マク ノ ヒ セッショク シンドウ ソクド ブンプ

抄録

As an alternative of microphone array measurement for locating noise sources of machines, a new method to visualize noise sources is proposed in this paper The method is based upon non contacting laser Dopplor vibro-velocimetry applied to the surface of a thin and light film placed closely in front of expected source region. The laser shoots all over the surface by the aid of 2-D scanning mirrors one point by next. This research provides a fundamental characteristics of the proposed method by practical measurements done for two speaker sources as a multiple source model. Regardless of phase relationship between two coherent sources, it was found that the method is applicable with small insertion effect upon sound field and with high resolution ability to multiple sources.

収録刊行物

• 可視化情報学会誌

  可視化情報学会誌 16 (1Supplement), 115-118, 1996

  社団法人 可視化情報学会

詳細情報

• CRID: 1390001204618363520
• NII論文ID: 10002674074
• NII論文ID: 130003443134
• NII書誌ID: AN10374478
• DOI: 10.3154/jvs.16.1supplement_115
• ISSN: 1884037X
• ISSN: 09164731
• NDL書誌ID: 3993911
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3993911
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可