基于凸组合的麦克风阵列自适应语音增强方法研究

doi:10.3969/j.issn.0255-8297.2021.02.008

Abstract

Abstract: Generalized sidelobe canceller is a widely used microphone array speech enhancement method, which has obvious noise reduction effect on speech signals with Gaussian noise. However, when impulse noise is mixed in the speech signal, the recognizability of the enhanced speech signal becomes significantly worse as using this method. In order to improve the noise reduction effect on speech signals with impulse noise, in this paper, an adaptive speech enhancement method for microphone array based on convex combination is presented. In this method, a single linear adaptive filter is replaced by a convex combined filter composed of linear filter and nonlinear spline filter, and the maximum correntropy criterion is used to update the weight of the convex combination filter and the control point factor in the nonlinear spline filter. Results show that the presented speech enhancement method can effectively filter the Gaussian noise and impulse noise in the speech signal, and the speech enhancement effect is extremely obvious.

Key words: microphone array, convex combination filter, spline filter, impulse noise, speech enhancement

CLC Number:

TN912.3

ZHAO Yibo, LU Haozhi, LI Shuhui, YAN Tao. Research on Adaptive Speech Enhancement Method for Microphone Array Based on Convex Combination[J]. Journal of Applied Sciences, 2021, 39(2): 261-271.

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Research on Adaptive Speech Enhancement Method for Microphone Array Based on Convex Combination

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[1]	XU Jin1,2, ZHAO Yi-bo1,2, GUO Ye-cai1,2. Adaptive Speech Enhancement for Microphone Array [J]. Journal of Applied Sciences, 2015, 33(2): 187-193.
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