Incredible! Scientists have discovered that the light of a bulb can eavesdrop on people’s conversati
Issuing time:2020-08-05 16:32
On June 16, according to foreign media reports, a study from Ben Gurion University in Israel and the Weizmann Institute of Science found that the speaker can be heard from a distance through a light bulb.
In this study, the researchers found that traditional light buds can be used to eavesdrop on conversations, and called the technology "Lamphone". If the conversation is very close to the light bulb, the third party can even listen from a distance of 25 meters, but at the same time a remote photoelectric sensor is needed to achieve this magical effect.
The researchers said that the photoelectric sensor analyzes the subtle vibrations on the surface of the bulb and obtains data. Then the data is separated from the audio signal and the light signal through a specially developed algorithm, and finally the audio signal is transcribed and recognized through a text application, and finally the content of the conversation is obtained.
Even more interesting is that the technology can even be used to identify songs. Apps like Shazam and SoundHound can identify songs 25 meters away.