Emphasis of short-duration transient speech features
US8296154B2 · kind B2 · utility
1Cited by
40References
67Claims
0Family size
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Key dates
| Filing date | Oct 28, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Jan 3, 2030 |
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 sort-duration speech features in said signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.