Sound source separation using spatial filtering and regularization phases
US8583428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2010 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Oct 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02166
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a multiple phase process/system that combines spatial filtering with regularization to separate sound from different sources such as the speech of two different speakers. In a first phase, frequency domain signals corresponding to the sensed sounds are processed into separated spatially filtered signals including by inputting the signals into a plurality of beamformers (which may include nullformers) followed by nonlinear spatial filters. In a regularization phase, the separated spatially filtered signals are input into an independent component analysis mechanism that is configured with multi-tap filters, followed by secondary nonlinear spatial filters. Separated audio signals are the provided via an inverse-transform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.