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| Sigmoid-based Volterra adaptive active noise cancellation filters |
| Zhang Jiashu①②; Xiao Xianci① |
| ①Dept. Of Electron. Eng.,UEST of China Chengdu 610054 China;②School of Computer and Commun. Eng.,Southwest Jiaotong Univ.,Chengdu 610031 China |
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Abstract A novel class of nonlinear adaptive active noise cancellation filter-sigmoid-based Volterra adaptive active noise cancellation filter is introduced. The normalized data and instantaneous error LMS algorithm is modified to update the coefficients of this sigmoid-based Volterra filter. Because the sigmoid-based Volterra adaptive filter, equivalent to second-order Volterra filter, is of the reduced coefficients and modularity, it is applied for adaptive active noise cancellation. Experimental results of adaptive active noise cancellation show that the proposed sigmoid-based Volterra adaptive active noise cancellation filter not only has good anti-noise performance, but also can be easily implemented.
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Received: 28 May 2000
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2002, Vol. 24 
