US EditionLight-based listening: Researchers develop a low-cost visual microphone
BEIJING, CHINA, JUL 31 – The visual microphone system uses single-pixel imaging to detect sound-induced vibrations on surfaces, offering an affordable alternative where conventional microphones cannot operate, researchers said.
6 Articles
6 Articles
Optical microphone sees sound like never before
A camera system 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 uses two cameras and a laser to sense high-speed, low-amplitude surface vibrations. These vibrations can be used to reconstruct s…
Visual microphone listens to sound using light
Credit: Xu-Ri Yao, Beijing Institute of Technology Physicists have developed a cheap and simple device which can transform ordinary objects into microphones. The technology uses light to detect minute vibrations caused by sound waves on the surfaces of objects and decodes this visual information into audible signals. Before now, these “visual microphones” have relied on expensive lasers or high-speed cameras. They also required the vibrating sur…
Light-based listening: Researchers develop a low-cost visual microphone
Researchers have created a microphone that listens with light instead of sound. Unlike traditional microphones, this visual microphone captures tiny vibrations on the surfaces of objects caused by sound waves and turns them into audible signals.
This time in the "special inventions" category: a microphone that doesn't listen, but sees. The new technology makes it possible to capture more than enough sound, even in soundproof rooms. Admittedly, it's not the first microphone to use light to produce an audio signal. However, the new microphone is by far the […] Want to know more about science? Read the latest articles on Scientias.nl .
Innovative Visual Microphone Uses Light to Capture Sound at Low Cost
In a groundbreaking advancement poised to revolutionize the way we capture and interpret sound, researchers at the Beijing Institute of Technology have pioneered a novel visual microphone technology that listens not with traditional acoustic sensors but through the subtle vibrations of light. This innovative system harnesses the principles of computational imaging, specifically leveraging a technique known as single-pixel imaging, to detect and …
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