System and method for adaptive classification of audio sources
US8143620B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2007 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for adaptively classifying audio sources are provided. In exemplary embodiments, at least one acoustic signal is received. One or more acoustic features based on the at least one acoustic signal are derived. A global summary of acoustic features based, at least in part, on the derived one or more acoustic features is determined. Further, an instantaneous global classification based on a global running estimate and the global summary of acoustic features is determined. The global running estimates may be updated and an instantaneous local classification based, at least in part, on the one or more acoustic features may be derived. One or more spectral energy classifications based, at least in part, on the instantaneous local classification and the one or more acoustic features may be determined. In some embodiments, the spectral energy classification is provided to a noise suppression system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.