Method and apparatus for speech recognition
US4817159A · kind A · utility
14Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1984 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jun 4, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Speech parameters (P.sub.h and P.sub.l) are derived for consonant classification and recognition by separating a speech signal into Low and High frequency bands, then in each band obtaining the time first-derivative, from which the min-max differences (power dip) are obtained (P.sub.h and P.sub.l). The distribution of P.sub.h and P.sub.l in a two-dimensional plot for a discriminant diagram classifies the consonant phoneme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.