Method and system for detecting events in an acoustic signal subject to cyclo-stationary noise
US9477895B2 · kind B2 · utility
5Cited by
6References
19Claims
0Family size
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Key dates
| Filing date | Mar 31, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Oct 26, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method detects events in an accoustic signal subject to cyclostationary background noise by first segmenting the signal into cycles. Features with a fixed dimension are derived from the cycles, such that the timing of the features is relative to a cycle time. The features are normalized using an estimate of the cyclostationary background noise. Then, after the normalizing, a classifier is applied to the features to detect the events.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.