Emphasis of short-duration transient speech features
US7219065B1 · kind B1 · utility
26Cited by
32References
38Claims
0Family size
Inventors
Key dates
| Filing date | Oct 25, 2000 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Oct 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/43
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sound processor including a microphone (1), a pre-amplifier (2), a bank of N parallel filters (3), means for detecting short-duration transitions in the envelope signal of each filter channel, and means for applying gain to the outputs of these filter channels in which the gain is related to a function of the second-order derivative of the slow-varying envelope signal in each filter channel, to assist in perception of low-intensity short-duration speech features in said signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.