发明名称 |
Ambient noise compensation system robust to high excitation noise |
摘要 |
A speech enhancement system controls the gain of an excitation signal to prevent uncontrolled gain adjustments. The system includes a first device that converts sound waves into operational signals. An ambient noise estimator is linked to the first device and an echo canceller. The ambient noise estimator estimates how loud a background noise would be near the first device before or after an echo cancellation. The system then compares the ambient noise estimate to a current ambient noise estimate near the first device to control a gain of an excitation signal. |
申请公布号 |
EP2244254(A1) |
申请公布日期 |
2010.10.27 |
申请号 |
EP20100160902 |
申请日期 |
2010.04.23 |
申请人 |
QNX SOFTWARE SYSTEMS (WAVEMAKERS), INC. |
发明人 |
HETHERINGTON, PHILLIP A. |
分类号 |
G10L21/02;H04M9/08 |
主分类号 |
G10L21/02 |
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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