Automatic detection of non-stationarity in speech signals
US6535843B1 · kind B1 · utility
1Cited by
8References
25Claims
0Family size
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Key dates
| Filing date | Aug 18, 1999 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Aug 18, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
When necessary to time scale a speech signal, it is advantageous to do it under influence of a signal that measures the small-window non-stationarity of the speech signal. Three measures of stationarity are disclosed: one that is based on time domain analysis, one that is based on frequency domain analysis, and one that is based on both time and frequency domain analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.