Mediation of wakeword response for multiple devices
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United States of America Patent
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Jun 12, 2018
Issued Date -
Mar 30, 2017
app pub date -
Sep 28, 2015
filing date -
Sep 28, 2015
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Abstract
Devices, systems, and methods provide synchronization of multiple voice-controlled devices to establish priority of one of the devices to respond to an acoustic signal, preventing other devices from responding to a single user command. Each device is configured to mediate its response to a wakeword by, after detecting the wakeword in an audio input, generating a data packet and attempting to send it to the other devices over a communication channel that prevents data collision. One device will succeed in sending the packet, while the other devices cannot until they receive the first device's packet, indicating that the first device has priority. Additionally, the devices may process their audio inputs to determine a signal quality, the signal qualities are shared between all devices, and the device with the best signal quality assumes priority.
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