Khan Academy Static

Croon a tune, croak like a frog, hum, hoot, or holler—you don’t need to be Pavarotti to transform laser light into dazzling shapes and patterns with the power of your voice. By humming, singing, or talking into the Vocal Visualizer—also known as a simple sound oscilloscope—you’ll be able to see sound as vibration, and create a variety of cool laser light patterns that are reflected onto a wall or any other flat surface.

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