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Title :円形空気薄膜層を壁面内に有する機械開口部からの音響放射(能動型分布音源による消音特性)
Title alternative :Sound Radiation from Ventilation Aperture with Circular Thin Air Layer Setting up Machinery Wall : Noise Attenuation by Using Active Noise Sources
Authors :渡部, 誠二
柳本, 憲作
谷藤, 克也
坂本, 秀一
伊藤, 孝宏
一宮, 亮一
Publisher :日本機械学会
Issue Date :Oct-2002
Journal Title :日本機械学会論文集. C編
Volume :68
Issue :674
Start Page :3122
End Page :3129
ISSN :0387-5024
Description :This paper describes insulation characteristics of slit resonator that a single channel ANC system for silencing leakage noise at ventilation aperture of package. The circular slit resonator composed of thin air layer that is radial expansion with very short axial length was set up package wall. The circular thin air layer is driven by one to four speakers that are controlled using Filtered-X-LMS algorithm to minimize sound power at error microphone. The experimental results show that the noise reduction region spreads to the high frequency side, as the slit depth decreases. The noise reduction quantity increases, as the slit width widens. Visualization of SPL and phase on the circular slit resonator indicate that the noise reduction mechanism is the interference of control sound and noise.
Keywords :Machine Tool
Noise Control
Active Noise Control
Circular Slit Resonator
Type Local :学術雑誌論文
Language :jpn
URI :http://hdl.handle.net/10191/5865
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/5865/1/9_0163.pdf
Relation :http://ci.nii.ac.jp/naid/110002378732
Rights :日本機械学会
Appears in Collections:10 査読済論文 = Postprint

Please use this identifier to cite or link to this item: http://hdl.handle.net/10191/5865