Apparatus and methods for the selective addition of noise to templates employed in automatic speech recognition systems
US4933973A · kind A · utility
73Cited by
6References
15Claims
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Key dates
| Filing date | Aug 16, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Aug 16, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To improve the recognition of incoming speech signals in noise, the prestored templates of noise-free speech are modified to have the estimated spectral values of noise and the same signal-to-noise ratio as the incoming signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.