| 基于等边三角形麦克风阵列的语音增强 |
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| 引用本文： | 袁坤,梁维谦,张国先. 基于等边三角形麦克风阵列的语音增强[J]. 清华大学学报(自然科学版), 2009, 49(7): 987-990 |
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| 作者姓名： | 袁坤 梁维谦 张国先 |
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| 作者单位： | 清华大学,微电子所,北京,100084;清华大学电子工程系,北京,100084 |
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| 基金项目： | 国家“八六三”高技术项目(2008AA010700);;宁波市自然科学基金资助项目(2007A610040) |
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| 摘 要： | 针对小体积应用场合下的语音增强,提出了一种基于等边三角形结构的麦克风阵列与Wiener后置滤波相结合,并由VAD作为控制单元的语音增强方法。该方法克服了自适应零限波束形成只能抑制空间相干噪声的缺点,并得到可在二维平面上旋转的波束主瓣。通过仿真和真实环境的实验,证明算法能够显著地提高输入语音信噪比,且适用于多种噪声场。
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| 关 键 词： | 语音增强 麦克风阵列 Wiener滤波 波束主瓣 |
Speech enhancement using a small trigonal microphone array |
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| YUAN Kun,LIANG Weiqian,ZHANG Guoxian. Speech enhancement using a small trigonal microphone array[J]. Journal of Tsinghua University(Science and Technology), 2009, 49(7): 987-990 |
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| Authors: | YUAN Kun LIANG Weiqian ZHANG Guoxian |
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| Affiliation: | 1.Institute of Microelectronics;Tsinghua University;Beijing 100084;China;2.Department of Electronic Engineering;China |
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| Abstract: | This paper describes a speech enhancement technique for low volume and low power applications.The method uses a small trigonal microphone array combined with Wiener filtering and voice activity detection(VAD).The VAD is the controlling unit.This method more effectively suppresses spatial nonstationary and stationary noise than the adaptive null-forming beamformer method by using a rotatable main lobe in the 2-D plane.Simulations and experiments show that the algorithm significantly increases the SNR and is ... |
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| Keywords: | speech enhancement microphone array Wiener filter main lobe |
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