Passive proximity detection

摘要

Techniques and devices are disclosed for utilizing passively received audio signals to determine proximity of devices to other objects. In one embodiment, a method of passive proximity detection is provided that includes sensing a first sound wave using a first audio transducer and generating a first signal representative of the first sound wave. A second sound wave is also sensed and a second signal is generated. The method includes comparing characteristics of the first and second signals using a processor to determine if differences between the first and second signals indicate the first audio transducer is proximately located to another object.

主权项

1. A method of passive proximity detection comprising:
sensing a first sound wave using a first audio transducer and generating a first signal representative of the first sound wave; sensing a second sound wave and generating a second signal representative of the second sound wave; and comparing characteristics of the first and second signals using a processor to determine if differences between the first and second signals indicate the first audio transducer is proximately located to another object, wherein the first and second sound waves are sourced from ambient noise not emitted from the object.