发明名称 |
Speech decoder that detects stationary noise signal regions |
摘要 |
A first determiner 121 tentatively determines whether the current processing unit represents a stationary noise period, based on stationary properties of a decoded signal. Based on the tentative determination result and a determination result of the periodicity of the decoded signal, a second determiner 124 determines whether the current processing unit represents a stationary noise period, thereby distinguishing a decoded signal including a stationary speech signal such as a stationary vowel from stationary noise and correctly identifying the stationary noise period.
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申请公布号 |
US7478042(B2) |
申请公布日期 |
2009.01.13 |
申请号 |
US20030432237 |
申请日期 |
2003.05.22 |
申请人 |
PANASONIC CORPORATION |
发明人 |
EHARA HIROYUKI;YASUNAGA KAZUTOSHI;MANO KAZUNORI;HIWASAKI YUSUKE |
分类号 |
G10L11/06;G10L11/02;G10L11/04;G10L15/00;G10L19/00;G10L19/012;G10L19/04;G10L19/12;G10L21/00;G10L25/78;G10L25/90 |
主分类号 |
G10L11/06 |
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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