A group of researchers from Adobe, Microsoft, and MIT have recovered audio from a video of a vibrating bag of potato chips. The algorithm developed by the researchers was also able to recover audio from videos of a plant, a bag of candy, and a pair of earbuds. The reason this works is that sound waves cause nearly imperceptible vibrations in whatever they hit. Using high-speed photography, the researchers were able to capture these vibrations and translate them into actual sound despite having no recording of the original stimulus in the video.
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