Noise suppression device
US8724828B2 · kind B2 · utility
3Cited by
2References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 19, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Jan 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0232
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A correction spectrum calculation unit 6 obtains a correction spectrum by smoothing an estimated noise spectrum in accordance with the degree of its variations, and a suppression quantity limiting coefficient calculation unit 7 decides a suppression quantity limiting coefficient from the correction spectrum. A suppression quantity calculation unit 9 obtains a suppression coefficient based on the suppression quantity limiting coefficient, and the spectrum suppression unit 10 carries out amplitude suppression of spectral components of an input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.