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US 12,687,624 B2Granted
Ultrasonic transmission for presence detection
AssigneeSonos, Inc.
InventorsDaniel Jones, Richard Bannon, Jake Harwood, Jonathan Herbst, Henry Sia
Life of this patent
Estimating the term…
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AssigneeSonos, Inc.
InventorsDaniel Jones, Richard Bannon, Jake Harwood, Jonathan Herbst, Henry Sia
Estimating the term…
An example involves detecting, during a time period by a receiving device, an audio signal comprising a superposition of a plurality of audio signals transmitted by a plurality of respective playback devices. The example further comprises determining a time-frequency representation of the audio signal and obtaining data associating playback devices with respective reference audio signals, each reference audio signal having a predefined time-frequency representation. The example further comprises, based on the time-frequency representation of the audio signal and the data, determining that the audio signal comprises a superposition of a first audio signal transmitted by a first playback device and a second audio signal transmitted by a second playback device.
A receiving device comprising:
At least one non-transitory computer-readable medium comprising program instructions that are executable by at least one processor such that a receiving device is configured to:
A method to be performed by a receiving device, the method comprising:
Dependencies are inferred from the claim text.