Active control of impulsive noise with symmetric alpha-stable distribution based on an improved step-size normalized adaptive algorithm

作者：Zhou Yali^*; Zhang Qizhi; Yin Yixin

来源：Mechanical Systems and Signal Processing, 2015, 56-57: 320-339.

DOI：10.1016/j.ymssp.2014.10.002

• Active noise control
• Impulsive noise
• alpha-stable distribution
• Normalized step size

In this paper, active control of impulsive noise with symmetric alpha-stable (S alpha S) distribution is studied. A general step-size normalized filtered-x Least Mean Square (FxLMS) algorithm is developed based on the analysis of existing algorithms, and the Gaussian distribution function is used to normalize the step size. Compared with existing algorithms, the proposed algorithm needs neither the parameter selection and thresholds estimation nor the process of cost function selection and complex gradient computation. Computer simulations have been carried out to suggest that the proposed algorithm is effective for attenuating S alpha S impulsive noise, and then the proposed algorithm has been implemented in an experimental ANC system. Experimental results show that the proposed scheme has good performance for S alpha S impulsive noise attenuation.

• 出版日期2015-5
• 单位北京科技大学