Apparatus and method for determining co-location of services using a device that generates an audio signal

摘要

An audio signature is generated by a user device by generating an audio signal indicative of the user device, outputting the audio signal indicative of the user device through a speaker of the user device, using a microphone of the user device to sense audio, generating an audio signature of the audio sensed by the microphone in the user device, and transmitting the audio signature from the user device to a communication channel. The audio signal may be used by another user device which generates its own audio signature, and which can be compared to the audio signature of the user device that originally generated the audio signal to determine if the user devices are co-located.

主权项

1. An apparatus for generating an audio signature comprising:
a probe including a microphone; an audio signal generator configured to generate an audio signal indicative of said apparatus; a speaker responsive to said audio signal generator that outputs the generated audio signal; an audio signature generator connected to said microphone configured to generate an audio signature from a sampled audio signal detected by the microphone, wherein the audio signature generator generates the audio signature without requiring detection of any additional audio signal; and a transmitter connected to said audio signature generator configured to transmit the audio signature to a communications channel.