发明名称 |
Echo canceller |
摘要 |
A method of echo cancellation for a signal transmission system in which the size of the step used to adapt filter coefficients is adjusted in accordance with the echo delay and in which stationary signals are avoided by determining when the mean and variance of coefficients obtained from a second order linear predictive coding analysis of successive far end samples exceed preset thresholds.
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申请公布号 |
US2003016815(A1) |
申请公布日期 |
2003.01.23 |
申请号 |
US20010805351 |
申请日期 |
2001.03.13 |
申请人 |
KURTZ SCOTT DAVID;MCCARTHY BRIAN MICHAEL |
发明人 |
KURTZ SCOTT DAVID;MCCARTHY BRIAN MICHAEL |
分类号 |
H04B3/23;(IPC1-7):H04M9/08 |
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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