[1]高婉贞,张玲华. 基于小波阈值去噪的麦克风阵列语音增强方法[J].计算机技术与发展,2014,24(10):144-146.
　GAO Wan-zhen,ZHANG Ling-hua. Microphone Array Speech Enhancement Algorithm Based on Wavelet Threshold Denoising[J].,2014,24(10):144-146.
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 基于小波阈值去噪的麦克风阵列语音增强方法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
24
期数:
2014年10期
页码:
144-146
栏目:
智能、算法、系统工程
出版日期:
2014-10-10

文章信息/Info

Title:
 Microphone Array Speech Enhancement Algorithm Based on Wavelet Threshold Denoising
文章编号:
1673-629X（2014）10-0144-03
作者:
 高婉贞; 张玲华
 南京邮电大学 通信与信息工程学院
Author(s):
 GAO Wan-zhen; ZHANG Ling-hua
关键词:
 ; 麦克风阵列; 小波阈值去噪; 延迟-求和; 时延估计; 时延补偿
Keywords:
 ; microphone array; wavelet thresholddenoising; delay-sum; time delay estimation; time delay compensation
分类号:
TP301
文献标志码:
A
摘要:
 现有的麦克风阵列语音增强方法中的延迟-求和波束形成算法只对不相干噪声或弱相干噪声有一定的消噪能力，如果语音中混有较强相干噪声，则此传统的方法对其没有消除能力。针对这个局限性，文中把小波阈值去噪的方法与传统的延迟-求和波束形成算法有效结合，使其对相干噪声也具有很好的消噪能力，同时减少由于噪声的存在而引起的时延估计误差，提高时延估计的准确性，使最终求和结果更好。通过仿真结果表明，这种改进方法可以改善最终语音效果，提高语音清晰度，使人耳更好地接受。
Abstract:
 Delay-sum beamforming method as a kind of microphone array speech enhancement algorithms only is effective for irrelevant noise and weak coherent noise. If the speech mixes coherent noise,the conventional method cannot remove it. For this limitation,in this paper wavelet threshold denoising is applied into conventional delay-sum beamforming speech enhancement algorithm,making it to be ef-fective for removing coherent noise. While reducing the time estimation error caused by the noise,improve the accuracy of time delay esti-mation and make the final sum result better. The simulation results show that the improved method is effective,which improves the charity of speech and degree of ear acceptance.

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更新日期/Last Update: 2015-04-02