Camera captures voices without a microphone

Throat movements get decoded to reveal sounds of speech

By Meghan Rosen, 17:08 PM June 7, 2013

MONTREAL — Eavesdroppers might not have to lip-read to listen in on a far-off conversation. Using a high-speed camera pointed at the throat, scientists can decipher a person’s words without relying on a microphone.

By snapping thousands of images per second, researchers recorded every wavering wobble of neck flesh that accompanied sounds floating out from a person’s voice box. A computer program then turned the recorded skin vibrations into sound waves, Yasuhiro Oikawa of Waseda University...

Source URL: https://www.sciencenews.org/article/camera-captures-voices-without-microphone