Researchers at the U.K.'s University of Bristol have been working on technology to allow people to whisper to one another from 100 feet away. The answer? Ultrasonic speakers, apparently.
The post Ultrasonic tech allows users to whisper in someone’s ear from 100 meters away appeared first on Digital Trends.
from
https://www.digitaltrends.com/cool-tech/ultrasonic-speakers-whisper-100-feet-away/
from
http://ifeeltechinc.blogspot.com/2017/05/ultrasonic-tech-allows-users-to-whisper.html
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