Time difference of arrival determination with direct sound
US9194938B2 · kind B2 · utility
4Cited by
8References
47Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 24, 2011 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Jan 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/86
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Acoustic signals may be localized such that their position in space is determined. Time-difference-of-arrival data from multiple microphones may be used for this localization. Signal data from the microphones may be degraded by reverberation and other environmental distortions, resulting in erroneous localization. By detecting a portion of the signal resulting from sound directly reaching a microphone rather than from a reverberation, accuracy of the localization is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.