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Performance improvement of a quiet zone using multichannel real-time active noise control system
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 Title & Authors
Performance improvement of a quiet zone using multichannel real-time active noise control system
Mu, Xiangbin; Ko, JinSeok; Rheem, JaeYeol;
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Generation of a quiet zone in noisy environment is undoubtedly of considerable realistic significance. This paper describes development and implementation of a multichannel real-time active noise control (ANC) system for 3 dimensional noisy environment to enhance the quiet zone performance in terms of size and noise cancellation gain. The proposed ANC system employes a multichannel delay-compensated filtered-X least mean square (FXLMS) algorithm; its real-time implementation is designed in TMS320C6713 digital signal processor (DSP) board. The system is evaluated for cancelling various tonal frequency noises in the range from 100 to 500 Hz, and the performance is then illustrated by measuring the quiet zone in terms of sound pressure level (SPL) attenuation. Experiment results show that a quiet zone of quiet with satisfactory size and maximum 24 dB noise attenuation is successfully generated.
Multichannel real-time ANC;Delay-compensated FXLMS;DSP board;Quiet zone;
 Cited by
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