223 適応フィードバック ANC システムの円形スリット状共鳴器への適用

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  • Application of Adaptive Feedback Control System for Slit Resonaotors

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This paper describes noise attenuation characteristics of a slit resonator that has adaptive feedback NANC system for silencing leakage noise at ventilation aperature. The slit resonator contains a thin air layer that extends radially over a very short axial length. In order to calculate the noise attenuation, computer simulations use the actual data such as fan noise and the transfer function from the canceling source to the error microphone. The effectiveness of the slit resonator that has adaptive feedback ANC system is clarified by computer simulations.

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