发明名称 |
Methods and apparatus for echo cancellation using an adaptive lattice based non-linear processor |
摘要 |
A non-linear processor for managing a speech signal is disclosed. The non-linear processor includes an adaptive lattice filter that generates a prediction error from a residual echo of the speech signal, a signum non-linearity unit that generates an excitation component from the prediction error, an excitation signal mixer that generates an excitation signal from the excitation component and a noise component, an inverse lattice filter that generates a modified residual echo from the excitation signal, and a gain adjuster that adjusts a power of the modified residual echo.
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申请公布号 |
US2003031314(A1) |
申请公布日期 |
2003.02.13 |
申请号 |
US20020121437 |
申请日期 |
2002.04.11 |
申请人 |
TANRIKULU OGUZ;DELLAMORTE JOHN O. |
发明人 |
TANRIKULU OGUZ;DELLAMORTE JOHN O. |
分类号 |
H04M9/08;(IPC1-7):H04M9/08 |
主分类号 |
H04M9/08 |
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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