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A Wave That Interferes from A Ray Array

brief excerpt from sarah rara's video "a ray array"

two transparencies with simple black and white patterns are moved by hand to create visual interference patterns–a moire effect–that is translated into sound as wave-shaping distortion: as the interference pattern becomes more complex, harmonics are added to the sound, and as the visual pattern becomes simpler (separates into lines) harmonics are subtracted, leaving a pure tone.

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