Patent ID: 11887602
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. 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.