发明授权
US07813923B2 Calibration based beamforming, non-linear adaptive filtering, and multi-sensor headset
有权
基于校准的波束成形，非线性自适应滤波和多传感器耳机
- 专利标题： Calibration based beamforming, non-linear adaptive filtering, and multi-sensor headset
- 专利标题（中）： 基于校准的波束成形，非线性自适应滤波和多传感器耳机
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申请号： US11251164申请日： 2005-10-14
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公开(公告)号： US07813923B2公开(公告)日： 2010-10-12
- 发明人: Alejandro Acero , Michael L. Seltzer , Zhengyou Zhang , Zicheng Liu
- 申请人： Alejandro Acero , Michael L. Seltzer , Zhengyou Zhang , Zicheng Liu
- 申请人地址： US WA Redmond
- 专利权人： Microsoft Corporation
- 当前专利权人： Microsoft Corporation
- 当前专利权人地址： US WA Redmond
- 代理机构： Westman, Champlin & Kelly, P.A.
- 代理商 Christopher J. Volkmann
- 主分类号： G10L15/20
- IPC分类号： G10L15/20 ; G10L21/02 ; H04R15/00
摘要：
A first set of signals from an array of one or more microphones, and a second signal from a reference microphone are used to calibrate a set of filter parameters such that the filter parameters minimize a difference between the second signal and a beamformer output signal that is based on the first set of signals. Once calibrated, the filter parameters are used to form a beamformer output signal that is filtered using a non-linear adaptive filter that is adapted based on portions of a signal that do not contain speech, as determined by a speech detection sensor.
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