发明名称 Acoustic echo canceller
摘要 <p>The echo-plus-speech input signal is canceled by transforming the input signal into spectral domain and decreasing the gain in each frequency which has a low signal-to-echo ratio. The gain in each frequency is controlled by the input signal-to-echo ratio estimate, modified by the prior input signal-to-echo estimate, a non-linear echo suppression function, and a smoothing function of the residual output echo signal estimate. <IMAGE></p>
申请公布号 EP0895397(B1) 申请公布日期 2006.08.23
申请号 EP19980306066 申请日期 1998.07.30
申请人 BITWAVE PTE LTD. 发明人 KOK, HUI SIEW
分类号 H04M9/08 主分类号 H04M9/08
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