Preprocessing method and device for speech recognition device
US4283601A · kind A · utility
30Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | May 8, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Signal-to-noise is enhanced by including the upper sideband of a sampled-speech signal with the original baseband signal for further signal processing. The invention features shifting both bands to form a continuum from 0 Hz to the sampling frequency. Application in a speech recognition is shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.