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

应用科学学报 ›› 2015, Vol. 33 ›› Issue (2): 187-193.doi: 10.3969/j.issn.0255-8297.2015.02.008

一种新的麦克风阵列自适应语音增强方法

徐进1,2，赵益波1,2，郭业才1,2

1. 南京信息工程大学电子与信息工程学院，南京210044
2. 江苏省大气环境与装备技术协同创新中心，南京210044

收稿日期:2014-10-08 修回日期:2014-12-06 出版日期:2015-03-30 发布日期:2014-12-06
作者简介:赵益波，博士，讲师，研究方向：非线性电路系统与自适应信号处理. E-mail：yibozhaodn@163.com
基金资助:
国家自然科学基金(No.51077057)；江苏高校优势学科建设工程项目基金；江苏省高校自然科学基
金(No.14KJB120007)；南京信息工程大学基金预演项目基金(No.2013x007)；优秀博士论文作者专项资
金(No.27122)资助

Adaptive Speech Enhancement for Microphone Array

XU Jin1,2, ZHAO Yi-bo1,2, GUO Ye-cai1,2

1. School of Electronic & Information Engineering, Nanjing University of
Information Science and Technology, Nanjing 210044, China
2. Jiangsu Collaborative Innovation Center on Atmospheric Environment and
Equipment, Nanjing 210044, China

Received:2014-10-08 Revised:2014-12-06 Online:2015-03-30 Published:2014-12-06

摘要/Abstract

摘要： 在复杂的语音环境中，利用麦克风阵列语音增强技术能有效地拾取目标语音信号并
消除噪声干扰，但传统的麦克风阵列波束形成的加权系数是固定的. 为了能灵活地控制麦克
风阵列波束的形成方向以及消除其波束旁瓣带来的残余噪声，提出了一种基于麦克风阵列的
自适应语音增强技术. 该技术将自适应滤波器和麦克风阵列相结合形成波束可控的广义旁瓣
消除器，然后在广义旁瓣消除器后面续接一个改进的谱减法，并加入契比雪夫窗函数. 仿真实
验结果表明，所提出的语音增强方法能有效去除语音信号中的噪声干扰，相比于传统广义旁
瓣消除器，信噪比大约提高了3.5 dB.

关键词: 麦克风阵列, 自适应滤波, 改进广义旁瓣消除器, 谱减法, 语音增强

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

中图分类号:

TN912

徐进1,2，赵益波1,2，郭业才1,2. 一种新的麦克风阵列自适应语音增强方法[J]. 应用科学学报, 2015, 33(2): 187-193.

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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一种新的麦克风阵列自适应语音增强方法

Adaptive Speech Enhancement for Microphone Array

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