发明名称 |
Echo canceller employing H-register and storage register |
摘要 |
An echo canceller comprising a digital filter having adaptive coefficients which are updated to simulate an echo response, a temporary register for storing default coefficients, and a controller for monitoring ERLE and in the event the ERLE is greater than a first predetermined threshold then enabling the digital filter and replacing the default coefficients in the temporary register with the adaptive coefficients, and in the event the ERLE is less than a second predetermined threshold then disabling the digital filter and replacing the adaptive coefficients with said the default coefficients from the temporary register.
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申请公布号 |
US2003223382(A1) |
申请公布日期 |
2003.12.04 |
申请号 |
US20030446359 |
申请日期 |
2003.05.28 |
申请人 |
MITEL KNOWLEDGE CORPORATION |
发明人 |
POPOVIC MIRJANA;SCHULZ DIETER;RADECKI JAN |
分类号 |
H04B3/23;(IPC1-7):H04B3/20 |
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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