Signal separating device, signal separating method, information recording medium, and program
US8285773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2007 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Oct 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0272
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A signal separating device includes an iterative estimator, a repeating calculator, a result output unit, and a repetition controller. The repeating calculator repeatedly causes the iterative estimator to iteratively perform independent component analysis on an observed signal matrix, and to further perform independent component analysis on the source signal matrix obtained as a result. The result output unit outputs the product of the respective mixing matrices obtained during each repetition as a mixing matrix with respect to the observed signal matrix, while also outputting the source signal matrix obtained during the final repetition as a source signal matrix with respect to the observed signal matrix. The repetition controller causes the repeating calculator to repeat the calculation control until all mixing matrices and all source signal matrices satisfy a convergence condition. The iterative estimator may perform a fixed number of iterations, or perform iterations until convergence is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.