Method and apparatus for extracting information-bearing portions of a signal for recognizing varying instances of similar patterns
US5025471A · kind A · utility
24Cited by
10References
38Claims
0Family size
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Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Speech signals are analyzed by correlating a sequence of samples to derive a sliding average magnitude difference function (SAMDF) whereby histograms are formed which are compressed and normalized to form histogram sequences representing the speech signal for comparison and recognition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.