Noise reduction device and noise reduction method
US8412520B2 · kind B2 · utility
4Cited by
6References
12Claims
0Family size
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Key dates
| Filing date | Oct 29, 2007 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Dec 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A noise reduction device comprises a SN ratio obtaining unit configured to obtain a SN ratio as a function of an estimated noise spectrum and an arithmetic product of an averaged power spectrum of the input signal and noise likeliness signal, and an output signal obtaining unit configured to obtain a output signal whose noise is reduced based on the input signal and the SN ratio obtained by the SN ratio obtaining unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.