Subspace Noise Estimation and Gamma Distribution Based Microphone Array Post-filter Design
文献类型：期刊论文
| 作者 | Cheng Ning1,2; Liu Wenju3 ; Wang Lan1,2
|
| 刊名 | CHINESE JOURNAL OF ELECTRONICS
 |
| 出版日期 | 2011-04-01 |
| 卷号 | 20期号:2页码:293-298 |
| 关键词 | Microphone array post-filter Gamma distribution Speech enhancement Subspace |
| 英文摘要 | This paper presents a novel method to design the microphone array post-filter. The key issue of post-filter is to accurately estimate the noise power spectrum, thus a subspace based noise estimation method is proposed. Furthermore, the Gamma probability density function is used to describe the signal power spectrum distribution and the signal-plus-noise subspace dimension is determined by maximizing the probability density signal to noise ratio. The noise power spectrum can be computed either with the speech or without the speech, using the eigenvalues corresponding to the noise subspace. With the same Gamma distribution assumption, a post-filter estimation method is proposed. Experiments show that the proposed noise estimation performs better than the conventional VAD based method. The post-filter can obtain a significant gain over the comparing methods in terms of quality measures of the enhanced speech. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Electrical & Electronic |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | SPEECH ENHANCEMENT ; REDUCTION ; INSIGHTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291178100020 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/2968]  |
| 专题 | 自动化研究所_模式识别国家重点实验室_机器人视觉团队 |
| 作者单位 | 1.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China 2.Chinese Univ Hong Kong, Shatin, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng Ning,Liu Wenju,Wang Lan. Subspace Noise Estimation and Gamma Distribution Based Microphone Array Post-filter Design[J]. CHINESE JOURNAL OF ELECTRONICS,2011,20(2):293-298. |
| APA | Cheng Ning,Liu Wenju,&Wang Lan.(2011).Subspace Noise Estimation and Gamma Distribution Based Microphone Array Post-filter Design.CHINESE JOURNAL OF ELECTRONICS,20(2),293-298. |
| MLA | Cheng Ning,et al."Subspace Noise Estimation and Gamma Distribution Based Microphone Array Post-filter Design".CHINESE JOURNAL OF ELECTRONICS 20.2(2011):293-298. |
入库方式： OAI收割
来源：自动化研究所
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