Method and apparatus for extracting speech spurts from voice and reproducing voice from extracted speech spurts
US6078882A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Jun 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/012
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Identification information of a speech spurt, hangover and pause is used to indicate that a digital voice signal is the speech spurt, hangover or pause. While the identification information of a speech spurt, hangover and pause is indicative of the speech spurt, a voice level adjuster does not attenuate the digital voice signal, and the voice signal/third signal combiner mixes it with a third signal which undergoes the maximum attenuation through a third signal level adjuster. While the identification information of a speech spurt, hangover and pause is indicative of the hangover, the voice level adjuster gradually attenuates the digital voice signal. This is because the level of the voice signal is expected to be high in the first half of the hangover period, but to decay in its latter half to such a level that it is dispensable for speech recognition. A third signal (noise), on the other hand, is gradually increased in the latter half of the hangover period to preserve the continuity in the transition from the speech spurt to a pause, thus achieving smooth transition to the pause. This makes it possible to reduce as much as possible the unnaturalness involved in switching between…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.