A technique to convey a voice to a person in the middle of a crowd … and only a person who hears!

The Massachusetts Institute of Technology (MIT) scientists have learned to use a laser to directly transmit sound to someone without hearing it.

The new technology will be seen as a breakthrough for the future of voice and communication, as voice, music and code can be passed on to anyone unheard, the Vyograms website said Saturday.

Charles M. "Our system can be used remotely to transmit information directly to the ear," said Wayne, a researcher at the Massachusetts Institute of Technology. "This is the first system to use a totally safe laser for the eyes and skin to transmit a sound signal to a specific person anywhere."

The MIT develops two different methods for transferring tones, music and laser recorded speech, both of which benefit from an effect called optical effect, the formation of sound waves resulting from the absorption of light materials. In this new research, the substance was water vapor in the air.

The researchers sent a laser beam at the speed of sound, which modified the wavelengths and coded various audio sounds.

This technique allowed scientists to transmit sound to a person more than 8 meters away and to a 60 db packet, without hearing the sound or the target sound.

As wonderful as using a laser to send a message to a friend in a crowded room, the MIT team has other important applications in mind for its technique.

They believe that further research will increase the transmission distance, which could make this technique useful in dangerous situations, such as mass shooting, where authorities can send instructions directly to people without being heard. nobody else.

Researcher Ryan M. Solinberger: "We hope that this will eventually become a business technology, there are many exciting possibilities, we want to develop communication technologies in a useful way."