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Jun 22, 2022

Newly developed optical microphone sees sound like never before

Posted by in categories: media & arts, robotics/AI

A camera system developed by Carnegie Mellon University researchers can see sound vibrations with such precision and detail that it can reconstruct the music of a single instrument in a band or orchestra.

Even the most high-powered and directed microphones can’t eliminate nearby sounds, ambient noise and the effect of acoustics when they capture audio. The novel system developed in the School of Computer Science’s Robotics Institute (RI) uses two cameras and a laser to sense high-speed, low-amplitude surface vibrations. These vibrations can be used to reconstruct , capturing isolated audio without inference or a microphone.

“We’ve invented a new way to see sound,” said Mark Sheinin, a post-doctoral research associate at the Illumination and Imaging Laboratory (ILIM) in the RI. “It’s a new type of , a new imaging device, that is able to see something invisible to the naked eye.”

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