Lost frame recovery techniques for parametric, LPC-based speech coding systems
US6810377B1 · kind B1 · utility
45Cited by
34References
4Claims
0Family size
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Key dates
| Filing date | Jun 19, 1998 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Jun 19, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A lost frame recovery technique for LPC-based systems employs interpolation of parameters from previous and subsequent good frames, selective attenuation of frame energy when the energy of a subframe exceeds a threshold, and energy tapering in the presence of multiple successive lost frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.