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Jan 6 - 'Sonic attack' on US embassy in Havana could have been crickets, say scientists


 


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 8 months ago '15        #1
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Jan 6 - 'Sonic attack' on US embassy in Havana could have been crickets, say scientists
 

 
The US embassy in Havana more than halved its staff in 2017 when diplomats complained of headaches, nausea and other ailments after hearing penetrating noises in their homes and nearby hotels.

The mysterious wave of illness fuelled speculation that the staff had been targeted by an acoustic weapon. It was an explanation that appeared to gain weight when an audio recording of a persistent, high-pitched drone made by US personnel in Cuba was released to the a*sociated Press.

But a fresh analysis of the audio recording has revealed what scientists in the UK and the US now believe is the true source of the piercing din: it is the song of the Indies short-tailed cricket, known formally as Anurogryllus celerinictus.

“The recording is definitively a cricket that belongs to the same group,” said Fernando Montealegre-Zapata, a professor of sensory biology at the University of Lincoln. “The call of this Caribbean species is about 7 kHz, and is delivered at an unusually high rate, which gives humans the sensation of a continuous sharp trill.”

As a child growing up in South America, Montealegre-Zapata recalls collecting crickets of a similar species and keeping them in cages in his room. One night he woke to a penetrating sharp sound. The culprit was one of the males calling out for mates. The offender was banned from the room but Montealegre-Zapata could still hear the cricket singing for females.

“I am not surprised that this call could disturb people who are not familiar with insect sounds,” he said.

The identification of the sound source does not mean that an attack of some sort did not happen, but it casts doubt over the sound being responsible for the diplomats’ health problems. The cause and nature of their illnesses remains unclear.

The spate of unexplained health problems among the US diplomats led doctors at the University of Pennsylvania to run tests on almost two dozen embassy staff. In March last year, the team concluded the diplomats had suffered concussion-like injuries, but other medical professionals have challenged the conclusions, claiming the doctors misinterpreted the test results.

Not all of the affected diplomats reported unusual sounds when they fell ill, and descriptions of any noises differed from person to person. Some recalled grinding or cicada-like sounds, while others experienced buffeting like that caused by an open car window.

In the new study, Montealegre-Zapata and Alexander Stubbs at the University of California searched a scientific database for insect sounds that matched the Cuban recording. The call of the Indies short-tailed cricket turned out to be remarkably similar, they found, with acoustic pulses repeated at the same rate, and specific frequencies being louder than others.

But the cricket’s mating call and the Cuban recording did not match up perfectly. The sound recorded in Havana had an uneven pulse structure which is not seen in calling insects.

Stubbs and Montealegre-Zapata realised that the discrepancy might be down to the environments in which the recordings were made. Scientists tend to record insect calls outside in the wild, while the diplomats complained of unpleasant sounds indoors. If the Cuban recording had been made in a room, the odd pulse structure might be explained by echoes off the walls, floor and ceiling.

The researchers tested the idea by playing the call of the Indies short-tailed cricket in a room through a single loudspeaker. Recordings from the room show that the sound gained the same uneven pulse structure seen in the Cuban recording. The two sounds matched even more closely.

Gerald Pollack, who studies how animals detect and discriminate sensory signals at McGill University in Montreal, said: “The paper shows how the cricket’s song could, when echoes to be expected in an indoor setting are taken into account, produce sounds strikingly, and quantitatively, similar to that provided by the AP. I find this a completely plausible explanation.”

He added that while he had no personal experience with the Indies short-tailed cricket, he had not heard of their calls ever having caused harm. “So far as I am aware,” he said, “except perhaps for an occasional sleepless night, no-one has suffered ill health as a result of cricket calls.”
visit this link https://www.theguardian.c .. say-scientists
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 8 months ago '04        #2
skillahmang  3 heat pts3
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 8 months ago '05        #3
autoraptronix  15 heat pts15
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Blatant disinfo.

Not everyone reported hearing anything and their families were also affected. Unless this is some new species only found on the lawn of the embassy in Havana, this cricket would be known for permanent brain damage. These scientists could have easily proven their theory by finding and taking samples of this cricket near the homes of the personnel affected. The neighbors should also be suffering brain damage. That kinda thing usually gets picked up on.

And both China and Cuba have this special little cricket? But only at US embassy sites?


The US evacuated 9 diplomats from China after they experienced strange auditory sensations
Rosie Perper Jul. 2, 2018, 3:56 AM

The US has evacuated more diplomats from China after several workers in Guangzhou were diagnosed with brain injuries after hearing mysterious sounds.

At least nine Americans a*sociated with the US consulate in Guangzhou have been medically evacuated after workers complained of strange aural sensations, the Wall Street Journal reported.

An embassy notice in June confirmed that several employees were sent to the US for further evaluation following complaints of unusual auditory phenomena. The warnings came as a government employee in Guangzhou was confirmed to have developed a brain injury consistent with that of 24 US diplomats and their family members who fell ill in Cuba in 2016.

But more than 250 people connected to diplomatic missions in China have received medical evaluations since complaints of the mystery illness arose, the Journal reported, citing an embassy notice sent last week.

 8 months ago '17        #4
lucifershammer  24 heat pts24
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sh*tty Chinese or Russian listening devices

 8 months ago '15        #5
Putin~Work  3791 heat pts3791 OP
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 autoraptronix said
Blatant disinfo.

Not everyone reported hearing anything and their families were also affected. Unless this is some new species only found on the lawn of the embassy in Havana, this cricket would be known for permanent brain damage. These scientists could have easily proven their theory by finding and taking samples of this cricket near the homes of the personnel affected. The neighbors should also be suffering brain damage. That kinda thing usually gets picked up on.

And both China and Cuba have this special little cricket? But only at US

yeah i dont believe it either.. just thought i should share.



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