Noise removal device and noise removal program
US9087518B2 · kind B2 · utility
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5References
20Claims
0Family size
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Key dates
| Filing date | Nov 17, 2010 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Jan 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0232
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A noise removal unit 102 executes noise removal and flooring processing of an input signal, and a density calculating unit 104 calculates, as to a point of interest on a time-frequency plane of the input signal passing through the noise removal, a density of non-flooring processing points from the presence or absence of the flooring processing of individual points around the point of interest. A partial suppression unit 105 replaces, when the density is less than a threshold, the power of the point of interest with its flooring value by considering it as a musical noise component, thereby suppressing the musical noise component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.