Proximity detection via audio

摘要

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for detecting ambient audio, generating audio data based on the ambient audio, generating a first audio fingerprint based on the audio data, providing the first audio fingerprint to a fingerprint comparison engine, the fingerprint comparison engine providing a comparison between the first audio fingerprint and a second audio fingerprint, and receiving a proximity signal based on the comparison.

主权项

1. A computer-implemented method, comprising:
generating a first coarse location signal based on a first coarse location of a first computing device; comparing the first coarse location and a second coarse location of a second computing device to determine that the first and the second coarse locations are within a predetermined coarse geographic proximity; and in response to determining that the first and the second coarse locations are within the predetermined coarse geographic proximity, performing a proximity detection, including:
generating an audio signal by the first computing device,generating a first audio fingerprint based on the audio signal,comparing the first audio fingerprint and a second audio fingerprint associated with the second computing device, andgenerating a proximity signal based on the comparison of the first audio fingerprint and the second audio fingerprint.