| 联合波束形成与谱减法的麦克风阵列语音增强算法 |
| |
| 引用本文： | 王冬霞,殷福亮.联合波束形成与谱减法的麦克风阵列语音增强算法[J].大连理工大学学报,2006,46(1):121-126. |
| |
| 作者姓名： | 王冬霞 殷福亮 |
| |
| 作者单位： | 大连理工大学,电子与信息工程学院,辽宁,大连,116024;辽宁工学院,信息科学与工程学院,辽宁,锦州,121001;大连理工大学,电子与信息工程学院,辽宁,大连,116024 |
| |
| 基金项目： | 中国科学院资助项目;教育部跨世纪优秀人才培养计划 |
| |
| 摘 要： | 考虑到封闭环境的散射噪声场中，传统波束形成方法及单通道谱减法对噪声抑制的局限性，提出一种将波束形成方法与谱减法相结合的麦克风阵列语音增强方法．该方法首先通过波束形成器的空间滤波作用，将波达方向不同的语音信号和噪声信号加以区别，再经过延时补偿单元的相应处理，从而达到衰减噪声的目的，然后采用谱减法对波束形成器输出端的残留噪声进行后置处理．仿真实验结果表明。在小房间混响情况下，与其他方法相比，该方法不仅运算量小。而且具有良好的噪声抑制性能．
|
| 关 键 词： | 麦克风阵列 语音增强 波束形成 谱减法 |
| 文章编号： | 1000-8608（2006）01-0121-06 |
| 收稿时间： | 2005-02-25 |
| 修稿时间： | 2005-02-252005-12-11 |
Combining beamforming and spectral subtraction for microphone array speech enhancement |
| |
| WANG Dong-xia,YIN Fu-liang.Combining beamforming and spectral subtraction for microphone array speech enhancement[J].Journal of Dalian University of Technology,2006,46(1):121-126. |
| |
| Authors: | WANG Dong-xia YIN Fu-liang |
| |
| Institution: | 1. School of Electr. and Inf. Eng., Dalian Univ. of Technol. , Dalian 116024, China; 2. Inf. Sci. and Eng. College, Liaoning Inst. of Technol. , Jinzhou 121001, China |
| |
| Abstract: | Considering the fact that both conventional beamforming and spectral subtraction have some limitations on the aspect of noise suppression in an enclosure noisy environment, a new microphone array-based speech enhancement method is presented with combining beamforming and spectral subtraction. Using the spatial sampling of the beamformer, the proposed method attenuates the noise from different directions of arrival by time delay compensation for speech signal. A spectral subtraction based on masking threshold is used to suppress the residual noise. Some simulations demonstrate that in addition to low computation complexity, the new method exhibits a better noise reduction performance than other methods. |
| |
| Keywords: | microphone array speech enhancements beamforming spectral subtraction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
