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WASHINGTON (AP) -- 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.
The cases vary deeply: different symptoms, different recollections of what happened. That's what makes the puzzle so difficult to crack.
In several episodes recounted by U.S. officials, victims knew it was happening in real time, and there were strong indications of a sonic attack.
Some felt vibrations, and heard sounds - loud ringing or a high-pitch chirping similar to crickets or cicadas. Others heard the grinding noise. Some victims awoke with ringing in their ears and fumbled for their alarm clocks, only to discover the ringing stopped when they moved away from their beds.
The attacks seemed to come at night. Several victims reported they came in minute-long bursts.
Yet others heard nothing, felt nothing. Later, their symptoms came.
"Brain damage and concussions, it's not possible," said Joseph Pompei, a former MIT researcher and psychoacoustics expert. "Somebody would have to submerge their head into a pool lined with very powerful ultrasound transducers."
Sound and health experts are equally baffled. Targeted, localized beams of sound are possible, but the laws of acoustics suggest such a device would probably be large and not easily concealed. Officials said it's unclear whether the device's effects were localized by design or due to some other technical factor.
And no single, sonic gadget seems to explain such an odd, inconsistent array of physical responses.
After the U.S. complained to Cuba's government earlier this year and Canada detected its own cases, the FBI and the Royal Canadian Mounted Police traveled to Havana to investigate.
FBI investigators swept the rooms, looking for devices. They found nothing, several officials briefed on the investigation said.
Cuba's government declined to answer specific questions about the incidents, pointing to a previous Foreign Affairs Ministry statement denying any involvement, vowing full cooperation and saying it was treating the situation "with utmost importance."
"Cuba has never, nor would it ever, allow that the Cuban territory be used for any action against accredited diplomatic agents or their families, without exception," the Cuban statement said.
An attack like this would be nearly impossible to miss. The weapon would have to be huge!
originally posted by: intrptr
a reply to: StallionDuck
An attack like this would be nearly impossible to miss. The weapon would have to be huge!
Not really, I was unable to go inside the chamber they kept the Hope Diamond in because the sonic pots on the walls. During the day they were 'idling', turned way down, at night they turned them up to prevent theft.
So at least as far back as the 70's they've had ultrasound deterrent devices , the ones I saw were about the size of a small coffee can hanging on the walls in the Smithsonian.
Hope Diamond
Sound and health experts are equally baffled. Targeted, localized beams of sound are possible, but the laws of acoustics suggest such a device would probably be large and not easily concealed.
Sound and health experts are equally baffled. Targeted, localized beams of sound are possible, but the laws of acoustics suggest such a device would probably be large and not easily concealed.
originally posted by: intrptr
a reply to: StallionDuck
Sound and health experts are equally baffled. Targeted, localized beams of sound are possible, but the laws of acoustics suggest such a device would probably be large and not easily concealed.
I already gave one example of ultrasound protection devices that I personally witnessed.
Heres another
Maybe the hotel they stayed at had pigeon ultrasound deterrent. Maybe you are just trying to fabricate a mystery.
...a number of experts aren't sure whether such a device exists.
"There isn't an acoustic phenomenon in the world that would cause those type of symptoms," Seth Horowitz, a neuroscientist and author of the book "The Universal Sense: How Hearing Shapes the Mind," told Business Insider via email.
Horowitz explained that no known inaudible — and seemingly undetectable — device could have the properties attributed to these strange sonic weapons.
Toby Heys, the leader of Manchester Metropolitan University's Future Technology research center told New Scientist that it's possible for something emitting infrasound — vibrations at a frequency below what humans can hear — to cause hearing loss. But Heys said that would require large subwoofers, making covert deployment unlikely.
Ultrasound devices, which operate above the range of human hearing, exist and could damage the ears, Heys said. But these would need to be directly targeted into the ear.
Altmann added that he is not aware of any sound weapons. “The only thing that might come close is the so-called LRAD, a big loudspeaker for audible noise,” he explained.
Long Range Acoustic Device (LRAD) technology also has already been used by law enforcement as a “sound cannon” to disperse large groups of people. Gizmodo reports that LRAD was used to emit a painful shrill that forced protestors to cover their ears during G20 protests in Pittsburgh in 2009.
Sound and health experts are equally baffled. Targeted, localized beams of sound are possible, but the laws of acoustics suggest such a device would probably be large and not easily concealed.
The system used a horn antenna to blast a beam of microwave energy at between 30GHz and 100GHz through a building wall: If people are speaking inside the room, any flimsy surface, such as clothing, will be vibrating. This modulates the radio beam reflected from the surface, it reported. That could be amplified using the Nasa technology and analysed as before.
Did you read the article? Did you even read my quote from the article? So how would I "fabricate a mystery" if it's IN THE ARTICLE.
The article specifically mentions that the beams were very focused and also they caused physical damage. It's not just an annoying sound.
Humans can't hear the sounds it produces.