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A Question of Sound?
Hi there, I'm wondering if it is possible to fire an inaudible frequency at an object and make it into an audible sound, thus creating a wire free speaker of sorts...? For example: You aim the frequency at, say an ornament and the ornament then begins to vibrate and make audible sound? Or the frequency is aimed at a building and it's occupants then hear it? This has got me really curious any info or pointers will be greatly appreciated...
Thanks...
Stezza!!
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