.png){kind=icon}
返回
Microphone array source enhancement using subtractive PSD estimation model
.png){kind=icon}
PRE
AI
DOI：10.1016/j.apacoust.2018.07.007.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Wiener post-filtering is a method for sound source enhancement that is known to be practically effective in various acoustic environments. To calculate an Wiener post-filter, the power spectral density (PSD) of the target source as well as that of noise needs to be estimated. Although a previous method known as PSD-esdmation-M-beamspace was invented for estimating the PSD of sound sources using multiple beamformers, heuristic design of the beamformers may degrade the accuracy in source PSD estimation. To avoid selecting such beamformers, this study proposes an analytical beamformer design method using subtractive PSD estimation model, i.e. the target source PSD is described by subtraction of the PSD of noise-dominant signals from the PSD of a target source dominant signal. The study reveals that beamformers suitable for PSD estimation can be analytically designed when a PSD mixing matrix consisting of the beamformer's directivity gains is circulant and its inverse becomes an M-matrix to make the PSD estimation model subtractive. The results of numerical simulations and practical experiments prove that the performance of the sound source enhancement will be improved when beamformers designed with the proposed method are utilized even in practical acoustic environments.
Keyword:
Circular microphone array
Power spectral density (PSD)
Beamformer/beamforming
Post-filtering
Circulant M-matrix
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3.6
论文数:
7.4K
被引数:
1.7W
机构
引用论文
分享收藏In vitro Activity of Azithromycin in Combination with Amikacin, Ceftazidime, Ciprofloxacin or Imipenem against Clinical Isolates of <i>Acinetobacter baumannii</i>.png)
Chemotherapy
ChemotherapyIF0
PREAI
分享收藏
查看更多内容