US 11,887,602 B1Granted

Audio-based device locationing

AssigneeAmazon Technologies, Inc.

InventorsBrendon Jude Wilson, Henry Michael D Souza, Cindy Angie Hou, Christopher Evans, Sumit Garg, Ravina Chopra

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Abstract

Techniques for performing audio-based device location determinations are described. A system may send, to a first device, a command to output audio requesting a location of the first device be determined. A second device may receive the audio and send, to the system, data representing the second device received the audio, where the received data includes spectral energy data representing a spectral energy of the audio as received by the second device. The system may, using the spectral energy data, determine attenuation data representing an attenuation experienced by the audio as it traveled from the first device to the second device. The system may generate, based on the attenuation data, spatial relationship data representing a spatial relationship between the first device and the second device, where the spatial relationship data is usable to determine a device for outputting a response to a subsequently received user input.

Claims20

Dependent claims

A computing system comprising:

a first device configured to output audio corresponding to an acoustic fingerprint, the audio including a watermark corresponding to an encoded representation of a device identifier of the first device;
at least one processor;
and
at least one memory comprising instructions that, when executed by the at least one processor, cause the computing system to:
receive, by a second device, the audio;
determine the audio corresponds to the acoustic fingerprint;
determine, using a decoder and based at least in part on determining the audio corresponds to the acoustic fingerprint, the device identifier encoded in the audio;
generate first data representing a first spectral energy of the audio as received by the second device;
determine, using the first spectral energy, second data representing an attenuation experienced by the audio as the audio traveled from the first device to the second device;
determine a first matrix representing a first spatial position of the first device relative to the second device;
and
generate, based on the second data, a second matrix representing a second spatial position of the first device relative to the second device.

9 more elements

A computing system comprising:

at least one processor;
and
at least one memory comprising instructions that, when executed by the at least one processor, cause the computing system to:
receive audio from a first device;
determine first data using the audio, wherein the first data represents a first spectral energy of the audio;
determine, using the first data, second data representing an attenuation experienced by the audio as it traveled from the first device;
and
generate, based at least in part on the second data, third data representing a spatial position associated with the first device.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/547,894Filed 10 Dec 2021
Granted: 30 Jan 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

G10L 15/30
Constructional details of speech recognition systems: distributed recognition, e.g. in client-server systems, for mobile phones or network…
H04R 27/00
Public address systems
G01S 5/18
Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance…:…
G06F 3/165
Sound input; Sound output: management of the audio stream, e.g. setting of volume, audio stream path