Endpoint detector
US4821325A · kind A · utility
43Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1984 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Nov 8, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/87
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An arrangement for endpoint detection improves speech recognition accuracy where the input signal includes nonstationary noise. Energy pulses are found by looking for local energy level peaks, then analyzing surrounding energy levels to determine pulse boundaries. Energy pulses are combined according to predetermined criteria to form longer pulses corresponding to words or phrases in the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.