发明名称 |
Spectral Domain, Non-Linear Echo Cancellation Method in a Hands-Free Device |
摘要 |
<p>Disclosed is a non-linear echo canceller and method for cancelling echo during full duplex communication in a hands free communication system. An input signal from a far-end talker and an input signal from the output from an echo canceller are received. K spectral subbands are created for each input signal. The spectral echo residual power at each subband is estimated and compared to a clean signal power to calculate a signal to echo ratio. Gains are calculated based on each calculated ratio and non-linear echo is canceleld based on the calculated gains.
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申请公布号 |
EP1978649(A3) |
申请公布日期 |
2008.12.31 |
申请号 |
EP20080154057 |
申请日期 |
2008.04.04 |
申请人 |
ZARLINK SEMICONDUCTOR INC. |
发明人 |
RAHBAR, KAMRAN |
分类号 |
H04B3/23 |
主分类号 |
H04B3/23 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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