Omni-directional speech separation
US11107492B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2019 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Sep 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/03
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system configured to perform directional speech separation using three or more microphones. The system may dynamically associate direction-of-arrivals with one or more audio sources in order to generate output audio data that separates each of the audio sources. Using three or more microphones, the system may separate audio sources covering 360 degrees surrounding the microphone array, whereas a two-microphone implementation is limited to 180 degrees. The system identifies a target direction for each audio source, dynamically determines directions that are correlated with the target direction, and generates output signals for each audio source. The system may associate individual frequency bands with specific directions based on a phase difference detected by two or more microphones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.