Speech signal processor
US4815135A · kind A · utility
16Cited by
6References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1985 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jul 9, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Speech analysis and synthesis invole analysis for sinusoidal components and pitch frequency, and synthesis by first phase-resetting to zero at pitch period all sine oscillater components, whether periodic for voiced speech, or at random period in accordance with a random code for unvoiced speech. As a result, the synthesized speech signal has the initial line spectrum spread due to pitch structure for better speech quality. Frequency modulation may also be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.