System and method for spatial noise suppression based on phase information
US8913758B2 · kind B2 · utility
4Cited by
2References
20Claims
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Key dates
| Filing date | Aug 8, 2011 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Apr 28, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are systems, methods, and non-transitory computer-readable storage media for suppressing spatial noise based on phase information. The method transforms audio signals to frequency-domain data and identifies time-frequency points that have a parameter (e.g., signal-to-noise ratio) above a threshold. Based on these points, unwanted signals can be attenuated the desired audio source can be isolated. The method can work on a microphone array that includes two microphones or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.