Sonos, Inc. (20250012911). Ultrasonic Transmission for Presence Detection
Ultrasonic Transmission for Presence Detection
Organization Name
Inventor(s)
Richard Bannon of Seattle WA US
Jonathan Herbst of Seattle WA US
Ultrasonic Transmission for Presence Detection
This abstract first appeared for US patent application 20250012911 titled 'Ultrasonic Transmission for Presence Detection
Original Abstract Submitted
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.