Speech decoder that detects stationary noise signal regions
US7478042B2 · kind B2 · utility
5Cited by
10References
6Claims
0Family size
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Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | May 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/90
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.