Sound attacks in Havana
samedi 16 septembre 2017 à 02:00When American diplomats were attacked with sound in Havana, some of them actually heard sounds. They observed these sounds to be audible within sharply localized areas.
I read, a few years ago, about a technology for modulating an ultrasound beam with audible frequencies as a system for presenting the audible sound in a controlled area from a distance. Maybe something like that was used.