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A device developed by an Israeli scientist can pick up conversations from hundreds of feet away without a microphone. “Using a laser beam with a camera, we can detect the voice wave patterns of the sounds that a person makes when they are talking,” says Bar-Ilan University Professor Zev Zalevsky, who helped design the system. “We take these wave patterns and translate them back into voice, and thus can interpret what was said from even a long distance away.”
