308 自由音場に放射される音響パワーの複数の受動音源による低減について(振動・音響の発生と相互作用そして利用2)(OS.05 : 振動・音響の発生と相互作用そして利用)

• 本田 善久

  近畿大

• 松久 寛

  京都大

• 吉田 武章

  京大院

書誌事項

タイトル別名

• 308 Sound Power Reduction in a Free Field by the Use of Passive Sources

抄録

This paper describes a study on control of sound power radiated into a free field by the use of passive sources. A model analyzed here consists of a primary point source and passive additional point sources. The primary source radiates a pure tone with a constant volume velocity. The passive sources respond acoustically to the applied sound pressure radiated from the primary source. The frequency range where the sound power effectively decreased is discussed in detail. It is found that the effective range is almost proportional to the sum of open area of the passive sources. It is also found that an appropriate amount of addition of acoustic resistance to the passive sources and appropriate difference in the acoustic reactance of the passive sources can enlarge the effective range. Some aspects of the discussion have been verified experimentally.

収録刊行物

• Dynamics and Design Conference : 機械力学・計測制御講演論文集 : D & D

  Dynamics and Design Conference : 機械力学・計測制御講演論文集 : D & D 2001 (0), 60-, 2001-08-03

  一般社団法人日本機械学会

キーワード

• Noise Control
• Passive Control
• Sound Power
• Free Field
• Acoustic Impedance
• Acoustic Resistance
• Acoustic Reactance
• Frequency Range

詳細情報

• CRID: 1570009752262096256
• NII論文ID: 110002481894
• NII書誌ID: AA11901770
• ISSN: 13480235
• 本文言語コード: ja
• データソース種別:
  • CiNii Articles