Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 12, 2019
Patent Application Number
15496362
Date Filed
April 25, 2017
Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent 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.
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