Invention Grant
- Patent Title: Double-talk detector
- Patent Title (中): 双通话检测器
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Application No.: US09385353Application Date: 1999-08-30
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Publication No.: US06570986B1Publication Date: 2003-05-27
- Inventor: Wen-Rong Wu , Shih-Chen Lin , Po-Cheng Chen , Chun-Hung Kuo
- Applicant: Wen-Rong Wu , Shih-Chen Lin , Po-Cheng Chen , Chun-Hung Kuo
- Main IPC: H04M908
- IPC: H04M908

Abstract:
A communication system includes an echo canceller and double-talk detector. The echo canceller includes an adaptive finite impulse response filter that generates an adaptive filter weight vector. The double talk detector computes a squared norm of the filter weight vector and detects an increase of the squared norm in order to detect double-talk status. Upon detection of double-talk status, operation of the echo canceller is suspended.
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