| 摘要 |
The invention is directed to systems, methods and computer program products for receiving and processing a plurality of electromagnetic signals at a mobile device. The plurality of electromagnetic signals includes electromagnetic signals broadcast from a broadcast multi-loop coil that encircles a space in which a mobile device is located. In one embodiment of the invention, a mobile device includes a processor, an interface in operable communication with the processor, a first multi-loop coil that captures an electromagnetic signal broadcast from the broadcast multi-loop coil, and an operational amplifier that receives the electromagnetic signal from the first multi-loop coil and converts the electromagnetic signal into at least one of an audio signal and a radio frequency (RF) signal that is audibly communicated to the user through the interface.
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