Method of noise reduction based on dynamic aspects of speech
US7107210B2 · kind B2 · utility
76Cited by
20References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2002 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Dec 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method are provided that reduce noise in pattern recognition signals. To do this, embodiments of the present invention utilize a prior model of dynamic aspects of clean speech together with one or both of a prior model of static aspects of clean speech, and an acoustic model that indicates the relationship between clean speech, noisy speech and noise. In one embodiment, components of a noise-reduced feature vector are produced by forming a weighted sum of predicted values from the prior model of dynamic aspects of clean speech, the prior model of static aspects of clean speech and the acoustic-environmental model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.