Even the most professional audio microphones cannot achieve such sound insulation. But researchers
The authors explain that sound is waves thatspread through the air. Anything that makes sound simply vibrates and makes waves. The optical microphone that the authors made is a camera system that monitors and interprets vibrations on the surface of a sound source or on objects that are close to the sound source.
The system the team created is calledCarnegie Mellon. It aims a laser at a vibrating surface and creates a precise pattern that distorts as it vibrates. The cameras record changes in the pattern at 63 frames per second. Then the software algorithm analyzes the received data.
According to the authors, they have invented a new waysound perception. The team tested its optical microphone to record a guitar and violin duet. The program also easily separated the sounds of two guitars playing a duet.
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