一种新的麦克风阵列自适应语音增强方法

doi:10.3969/j.issn.0255-8297.2015.02.008

Abstract

Abstract: In a complex speech environment, microphone array speech enhancement techniques
can effectively extract target speech signals and eliminate noise. In a conventional
microphone array, the beam forming weighting coefficients are fixed. To flexibly control
the beam forming direction of the microphone array and eliminate residual noise due to
side-lobes, this paper presents an adaptive enhancement technique for microphone array
speech. A microphone array with an adaptive filter is used to form a controllable generalized
sidelobe canceller (GSC), followed by improved spectral subtraction with a Chebyshev
window function. Simulation results show that the proposed method can effectively remove
noise, improving the performance by about 3.5 dB with respect to the ordinary GSC.

Key words: microphone array, adaptive filter, improved generalized sidelobe canceller (GSC), spectral subtraction, speech enhancement

CLC Number:

TN912

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.

References

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Adaptive Speech Enhancement for Microphone Array

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