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Mystery of Sonic Weapon Attacks At US Embassy In Cuba Deepens (theguardian.com)
An anonymous reader quotes a report from The Guardian: The blaring, grinding noise jolted the American diplomat from his bed in a Havana hotel. He moved just a few feet, and there was silence. He climbed back into bed. Inexplicably, the agonizing sound hit him again. It was as if he'd walked through some invisible wall cutting straight through his room. Soon came the hearing loss, and the speech problems, symptoms both similar and altogether different from others among at least 21 U.S. victims in an astonishing international mystery still unfolding in Cuba. The top U.S. diplomat has called them "health attacks." New details learned by the Associated Press indicate at least some of the incidents were confined to specific rooms or even parts of rooms with laser-like specificity, baffling U.S. officials who say the facts and the physics don't add up.
Suspicion initially focused on a sonic weapon, and on the Cubans. Yet the diagnosis of mild brain injury, considered unlikely to result from sound, has confounded the FBI, the state department and U.S. intelligence agencies involved in the investigation. Some victims now have problems concentrating or recalling specific words, several officials said, the latest signs of more serious damage than the U.S. government initially realized. The United States first acknowledged the attacks in August -- nine months after symptoms were first reported.
Suspicion initially focused on a sonic weapon, and on the Cubans. Yet the diagnosis of mild brain injury, considered unlikely to result from sound, has confounded the FBI, the state department and U.S. intelligence agencies involved in the investigation. Some victims now have problems concentrating or recalling specific words, several officials said, the latest signs of more serious damage than the U.S. government initially realized. The United States first acknowledged the attacks in August -- nine months after symptoms were first reported.
This is a US Government installation. They almost certainly are using Cisco or Aruba Wireless. Of course, they never buy the cheapest model either.
Let's talk Cisco for a moment. Cisco delivers a technology known as "CleanAir" which Aruba also has for the most part. It's designed for site survey and is able to scan large chunks of the 2.4Ghz and 5Ghz spectrum.
Turn the feature on... then look at the map and see if there's microwave near by. It will assign pseudo MAC addresses to unknown signals and attempt to identify them by radio pattern.
Now, if CleanAir isn't picking it up, then install some spectrum analyzers.
As others had mentioned... you don't need to transmit audible signals into someones head to make them hear it. You simply need to transmit signals which trigger the mind to believe they are audible. Microwave and others are perfectly capable of having this effect. In fact, some people believe that the reason why some people claim to be susceptible to wireless networking is because it causes a ringing like tinnitus. Of course like Tinnitus (which I recently began suffering... Merry Christmas 2016) it's not possible to diagnose properly.
As for targeted signals.... all frequencies can be targeted. It's not as if there's something somewhere which says audio absolutely must be as close to isotropic as possible. Any frequency can quite easily be targeted.
As a cheap but effective example... sound showers are an example of this.