首页>
外国专利>
APPARATUS AND METHOD FOR SUPPRESSING NOISE FROM VOICE SIGNAL BY ADAPTIVELY UPDATING WIENER FILTER COEFFICIENT BY MEANS OF COHERENCE
APPARATUS AND METHOD FOR SUPPRESSING NOISE FROM VOICE SIGNAL BY ADAPTIVELY UPDATING WIENER FILTER COEFFICIENT BY MEANS OF COHERENCE
展开▼
机译:通过相干手段自适应地更新维纳滤波器系数以抑制语音信号中的噪声的装置和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A voice signal processor detects background noise sections to reflect characteristics of the background noise on the Wiener filter coefficient to be used for suppressing noise components of input voice signals. In the voice signal processor, directivity signal generators form directivity signals having a directivity pattern. The directivity signals are used by a coherence calculator to obtain coherence, which is in turn used by a targeted voice section detector to detect a targeted voice section. A background noise section detector detects background noise sections containing no voice signal. When a background noise section is detected, a WF adapter uses characteristics of background noise in the detected temporal section to calculate a new WF coefficient.
展开▼