Continuous speech recognition method
US4528688A · kind A · utility
16Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1984 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Apr 19, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This speech signal recognition system compares the two-dimensionals pattern (time sequence of feature vectors) of an unknown signal to prestored standard references patterns for recognition, thus forming a corresponding two-dimensional comparison pattern of points of elemental Hamming distance differences. The sum of the pattern point distances is the similarity measure. To improve accuracy, partial patterns are selected (or "masked") and tested sequentially, and the point values weighted relative to their location within the mask. The mask may be rectangular or oblique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.