Amazon Technologies, Inc.

Rapid Focus Security, LLC

Rong Chen

James G Droppo

Chao Wang

Ming Sun

Sumit Garg

Chieh-Chi Kao

Qingming Tang

Chia-Jung Chang

Qin Zhang

Gengshen Fu

Aaron Challenner

Michael Thomas Peterson

Cody Jacques

Stefan M Bradstreet

Sumig Garg

James Garnet Droppo

A device is configured to detect multiple different wakewords. A device may operate a joint encoder that operates on audio data to determine encoded audio data. The device may operate multiple different decoders which process the encoded audio data to determine if a wakeword is detected. Each decoder may correspond to a different wakeword. The decoders may use fewer computing resources than the joint encoder, allowing for the device to more easily perform multiple wakeword processing. Enabling/disabling wakeword(s) may involve the reconfiguring of a wakeword detector to add/remove data for respective decoder(s). Specific decoders may be activated/deactivated depending on device context, thereby efficiently managing device resources.

Audio detection

A system may include a first acoustic event detection (AED) component configured to detect a predetermined set of acoustic events, and include a second AED component configured to detect custom acoustic events that a user configures a device to detect. The first and second AED components are configured to perform task-specific processing, and may receive as input the same acoustic feature data corresponding to audio data that potentially represents occurrence of one or more events. Based on processing by the first and second AED components, a device may output data indicating that one or more acoustic events occurred, where the acoustic events may be a predetermined acoustic event and/or a custom acoustic event.

Acoustic event detection

A method of direction-aware device location includes establishing a region of interest comprising a plurality of wireless devices. A reference frame is then determined based on the established region of interest. A plurality of initial positions of the plurality of wireless devices is determined. A plurality of wireless signal strengths is measured as a function of time at each of the plurality of wireless devices. A topology of the plurality of wireless devices is determined as a function of time based on the plurality of measured wireless signal strengths as a function of time and the reference frame for each of the plurality of devices. Location and movement information is then determined as a function of time for each of the plurality of wireless devices based on the determined topology as a function of time.

Method and apparatus for direction-aware device location

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Boston, MA, United States of America

Rong Chen