Audio source localization
US9069065B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Jun 11, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Techniques are described for determining locations of audio sources. Audio signals are captured from multiple locations. Pairs of the audio signals are analyzed to create correlograms, indicating correlation scores corresponding to different time offsets between the signals. Based on the correlograms, various locations are analyzed to determine probabilities of audio originating from those locations. The highest probabilities are found, indicating locations containing audio sources. In some situations, the audio sources may be reflective sources, and the locations of the reflective sources may be used to determine locations of objects or surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.