Blind signal separation method and structure, voice control system, and electrical appliance assembly
US10825466B2 · kind B2 · utility
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Key dates
| Filing date | Sep 26, 2017 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Sep 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02163
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A blind signal separation method includes: performing noise reduction preprocessing on a detected voice signal, wherein the voice signal is a linear superposition signal of a plurality of simultaneous signal source voice messages; constructing, by means of non-Gaussian measurement, a target function for the preprocessed voice signal; estimating, by means of an iterative algorithm, an expectation-maximization separation matrix W of the target function; and deriving an estimated target separation signal U(n) from U(n)=WX(n), wherein X(n) is a vector constructed by the plurality of signal source voice messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.