The reports come from the time between the end of December 2016 and August 2017: Night-time noises of employees in the US had alarmed the Embassy in the Cuban capital Havana, who were staying in the Hotel “Capri”. On the failure of the attack, which was described in Detail, however, different, followed, health problems, loss of hearing, for example, as difficulties in Speaking or memory problems.
a targeted attack with a so-called sound weapons – what is it, read here in Detail – or micro-waves was then discussed. Americans and Cubans together identified, found in the hotel rooms, however, no evidence of hidden technical equipment, or the like.
Now the two biologists Alexander Stubbs of the University of California, Berkeley, and Fernando Montealegre-Zapata of the University of Lincoln will present a different theory: you have the information that crickets of the species Anurogryllus celerinictus is likely to be, at least for a part of the described noise responsible.
rate of seven Kilohertz
The scientists had evaluated an audio recording that was published by the AP news Agency. A frequency analysis of the sound, had especially shown in the case of seven Kilohertz strong rashes. The fit to the Caribbean grill, the scientists.
Also, the volume and the Pulsation of the sound to be comparable to the sounds of the animals – however, there are also differences in the Detail. But this could also have to do with this, researchers took the sounds of insects, usually in open country. The recording from Havana come from an interior space in which the sound waves may be at walls and furniture would be reflected.
Montealegre-Zapata said the Guardian, as a child, he was bred in South America, even crickets and put them in cages in his room. One night he woke up because of a piercing sound. responsible for this was a specific male animal and even after this had been banished from the room, I hear him still clearly female.
“It doesn’t surprise me that this noise will not disturb people who are familiar with the sounds of insects,” says the researcher.
the manuscript is not of colleagues
With the presented now, is the grilling of the theory examined is the possibility of a targeted attack, of course, not completely exclude it. Especially since so far there are no known reports of the sound of crickets has ever led to injury to people.
An important restriction is also that the two researchers will present their idea in a colleague, peer-reviewed journal articles. Instead, you have to put first, only the pre-print of a possible manuscript for a scientific discussion and into the net. This is not to say that one should treat the results with caution – because you may have a closer technical assessment.
If you want to try it yourself, once: the sample you can hear the sound of the concerned cricket here.