发明名称 |
Excitation vector generator, speech coder and speech decoder |
摘要 |
A noise canceller removes a noise component from an input speech signal. The noise canceller includes a noise cancellation coefficient adjuster that adjusts a noise cancellation coefficient to determine an amount of noise cancellation. A noise spectrum storage device stores an estimated noise spectrum. A noise estimator estimates a noise spectrum by comparing an input spectrum with a noise spectrum stored in the noise spectrum storage device. A noise canceling/spectrum compensator subtracts the noise spectrum stored in the noise spectrum storage device from the input spectrum based on a coefficient acquired by the noise cancellation coefficient adjuster.
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申请公布号 |
US2005203736(A1) |
申请公布日期 |
2005.09.15 |
申请号 |
US20050126171 |
申请日期 |
2005.05.11 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YASUNAGA KAZUTOSHI;MORII TOSHIYUKI;EHARA HIROYUKI |
分类号 |
G10L19/00;G10L19/04;G10L19/08;G10L19/12;G10L19/135;G10L19/14;G10L21/00;(IPC1-7):G10L19/12 |
主分类号 |
G10L19/00 |
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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