US2020116820A1PendingUtilityA1
Audio based motion detection
Est. expiryApr 25, 2037(~10.7 yrs left)· nominal 20-yr term from priority
Inventors:Oystein Birkenes
G01S 1/753G01S 2201/02G01S 5/18H04R 3/005H04R 2430/23G06F 1/3231H04N 7/147G06F 1/3296G01S 5/017G01S 1/74
56
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Claims
Abstract
A controller of a collaboration endpoint generates a primary audio signal for an ultrasonic source audio signal produced by a source audio speaker, a reference audio signal for the ultrasonic source audio signal, and, based on the reference audio signal, a predicted signal that is predictive of the primary audio signal. The controller produces a prediction error of the predicted signal by comparing the primary audio signal with the predicted signal and determines whether the prediction error is indicative of a motion of one or more persons near the collaboration endpoint.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method comprising:
at a controller of a collaboration endpoint, generating a primary audio signal for an ultrasonic source audio signal produced by a source audio speaker; generating a reference audio signal for the ultrasonic source audio signal; generating, based on the reference audio signal, a predicted signal that is predictive of the primary audio signal; producing a prediction error of the predicted signal by comparing the primary audio signal with the predicted signal; and determining whether the prediction error is indicative of a motion of one or more persons near the collaboration endpoint.Join the waitlist — get patent alerts
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