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Wednesday, April 13, 2022

FM Audio


Turning Sound Into a Laser
CodeParade

FM - Frequency Modulation - usually refers to radio's technique for encoding an audible signal within a radio signal, but here Mr. Parade is mixing an audible signal with an ultrasonic sound wave. The results are unexpected. You don't want to turn the volume of the ultrasonic signal up too high, it can give you a headache. Reminds me of the SAW - Surface Acoustic Wave - Filters which are also weird in a somewhat similar way.


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