Apparatus for extracting features from a speech signal
US4866777A · kind A · utility
38Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1984 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Nov 9, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A polyphase digital filterbank extracts a spectral envelope composed of thirty-two bands, having uniform bandwidths, from a speech signal. The spectral envelope is then compressed into a predetermined number of bands having uniform bandwidths. Spectral energy features are extracted from the compressed envelope and are utilized to form templates representing the speech signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.