A maker called PlasmatronX built a system to visualize the 3D sound field inside an acoustic levitation device. Using a Schlieren optical setup — which detects air density variations as brightness changes — combined with computed tomography techniques, they captured images from multiple angles and processed them in Python to reconstruct a volumetric 3D map of the ultrasonic standing wave field. The goal was to calibrate the levitator by actually seeing what the sound field looks like.
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