Camera captures voices without a microphone | Science News

Real Science. Real News.

Science News is a nonprofit.

Support us by subscribing now.


Camera captures voices without a microphone

Throat movements get decoded to reveal sounds of speech

4:58pm, 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 in Tokyo reported June 3 at the International Congress on Acoustics.

Standard lip-reading software tracks lip twitches, tongue waggles and jaw motions as a person’s mouth forms a word. Some programs are soph

This article is only available to Science News subscribers. Already a subscriber? Log in now.
Or subscribe today for full access.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content