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Old 11th Aug 2017, 00:27   #1 (permalink)
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Diplomats lose hearing - sound weapon to blame?

Interesting article here.
Have heard of blinding people, but deafening them?
Usually the sound of freedom is enough...
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Old 11th Aug 2017, 01:56   #2 (permalink)
 
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More likely to be the constant use of in ear headphones set to an excessive volume to drown out background noise. The ears are open to the air for two reasons, one is to let sound in, the other to let air in.

Then of course there is the possibility of water borne infections. I'm sure that a posting to Cuba tempts people to spend much more time swimming or playing in the water than they might normally do.

Deafness can result from prolonged exposure to infra sound or ultra sound that is beyond the range of normal human hearing, but as the damage was being caused, pain, chronic headaches, dizzyness, vomiting and other vestibular symptoms would almost certainly be experienced. Such symptoms could possibly be mistaken for and dismissed as a passing tropical bug, or change in diet or water quality.

Excessive sounds at any frequency would be trivial to detect and monitor using a computer hooked up to a wide spectrum microphone, or several covering many octaves of frequency from whale song to bat echo locating. Bats emit echolocation calls at over 120dB, which would cause pain if we could actually hear them, but sound tends to travel very short distances through air at these frequencies, 50-100 metres at best, even at tremendous volume.

So some sort of directed audio beam is unlikely to be responsible for the reported symptoms.
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Old 11th Aug 2017, 02:01   #3 (permalink)
 
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Cuba testing Tesla's earthquake machine?
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Old 11th Aug 2017, 02:07   #4 (permalink)
 
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Word now that Canadian diplomats have suffered similar symptoms. Likely not devious...perhaps infections.
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Old 11th Aug 2017, 03:55   #5 (permalink)
 
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Was going to suggest that it could come from having to listen to all statements from the POTUS, but since the Canadians are also now affected .....
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Old 11th Aug 2017, 08:38   #6 (permalink)
 
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An activity which is reputed to cause hairs to grow on the palm of your hand has also been linked to deafness.
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Old 11th Aug 2017, 11:38   #7 (permalink)
 
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I hadn't heard that.



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Old 11th Aug 2017, 15:05   #8 (permalink)
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Quote:
Originally Posted by G0ULI View Post
Deafness can result from prolonged exposure to infra sound or ultra sound that is beyond the range of normal human hearing, but as the damage was being caused, pain, chronic headaches, dizzyness, vomiting and other vestibular symptoms would almost certainly be experienced.
Excessive sounds at any frequency would be trivial to detect and monitor using a computer hooked up to a wide spectrum microphone, or several covering many octaves of frequency from whale song to bat echo locating. Bats emit echolocation calls at over 120dB, which would cause pain if we could actually hear them, but sound tends to travel very short distances through air at these frequencies, 50-100 metres at best, even at tremendous volume.
I was very recently on a 'bat walk'.
Although, at my age, I cannot hear the bats, the guide suggested that prolonged exposure to their calls can result in discomfort - even though no audible sounds are heard.
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Old 11th Aug 2017, 19:18   #9 (permalink)
 
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An activity which is reputed to cause hairs to grow on the palm of your hand has also been linked to deafness.
I've heard that before but I've never seen it in writing
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Old 11th Aug 2017, 19:30   #10 (permalink)
 
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They must have been sent back with fleas in their ear.
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Old 11th Aug 2017, 23:58   #11 (permalink)
 
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There is a device available which generates ultrasonic sound which is uncomfortable for teenagers who can hear it, but inaudible to older people. Google for "sonic teenager deterrent" to find the link.
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