发明名称 |
Method and device for encoding wideband speech capable of independently controlling the short-term and long-term distortions |
摘要 |
A method for encoding wideband speech includes sampling the speech to obtain successive voice frames each comprising a predetermined number of samples, and determining for each voice frame parameters of a linear prediction model. The parameters include a long-term excitation word extracted from an adaptive coded directory, and a short-term excitation word extracted from a fixed coded directory. The extraction of the long-term excitation word is performed using a first weighting filter. The extraction of the short-term excitation word is performed using a second weighting filter cascaded with a third weighting filter. The first and third weighting filters are equal. |
申请公布号 |
US2004073421(A1) |
申请公布日期 |
2004.04.15 |
申请号 |
US20030622019 |
申请日期 |
2003.07.17 |
申请人 |
STMICROELECTRONICS N.V. |
发明人 |
ANSORGE MICHAEL;BIUNDO LOTITO GIUSEPPINA;CARNERO BENITO |
分类号 |
G10L19/08;G10L19/12;(IPC1-7):G10L19/10 |
主分类号 |
G10L19/08 |
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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