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Multiwave active noise control system at the underground mine

Journal article published in 2011 by Zi Jian Tian, Li Ya Zhang
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

Full text: Unavailable

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Preprint: policy unknown
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Postprint: policy unknown
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Published version: policy unknown

Abstract

To reduce the noise pollution in the coal mine,presented a mining multiwave active noise control scheme based on the improved FXLMS algorithm.For long roadway in coal mines and the far distances between the main and secondary noise sources,the multiwave scheme can effectively solve the problems of the single microphone’s mismatching errors.The multiwave active noise control scheme based on the improved FXLMS algorithm can even narrow down the modified error signals to zero.This scheme can increase the refreshing rate of the weight coefficients of the adaptive filters’ secondary noise path.Moreover,it can reduce the effects of the changing of weight coefficients on the system.And then it can increase the system convergence speed.The scheme is simulated by Matlab.The results illustrated that the scheme’s input and the speaker’s output are basically the signals of the same frequency,the same amplitude,and the inverse phrase.And the scheme is proved can effectively eliminate the noises in the 3dimention space of the coal mine.