Complex signal activity detection for improved speech/noise classification of an audio signal
US6424938B1 · kind B1 · utility
52Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2025/783
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Perceptually relevant non-speech information can be preserved during encoding of an audio signal by determining whether the audio signal includes such information. If so, a speech/noise classification of the audio signal is overriden to prevent misclassification of the audio signal as noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.