Apparatus for speech recognition
US4736429A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for speech recognition, having each phoneme as a fundamental recognition unit, recognizes input speech by discriminating phonemes in the input speech. The apparatus comprises a memory for storing phoneme standard patterns of phonemes or phoneme groups; a spectrum analyzer for obtaining parameters indicative of the input speech signal spectrum; a statistical distance measure similarity calculator calculates the degree of similarity between the output of the spectrum analyzer and standard patterns stored in the memory; a segmentation portion for segmenting by using time-dependent low- and high-frequency power variations of the input speech signal and results from the similarity calculator; and a phoneme discriminator for recognizing phonemes by using the results from the similarity calculator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.