Today, (CNN) Senate holds hearing on Cuba ‘sonic attacks’ Here’s a link to previous articles. Since that time, the FBI has (ABC) come to doubt. But the Russian research involved exposure over weeks, at much lower thresholds than noted by Western sources. Did the F.B.I. consult “Effects of Ultrasonic Noise on the Human Body – … Continue reading Senate Hearings on Havana Sonic “Attacks”
Let’s look at the homework. Once every 15 cycles, all four crystals line up. Once every 375 microseconds, all the crystals are pushing. So we could expect an audible tone at 2667 Hz. There is also a half-height reverse pulse in the middle of these, which combines to a second harmonic. In fact, a variety … Continue reading Havana Sonic Attack Weapon — Let’s Build It! Part 6
Given Russian strengths in physics and weakness in electronics, the Russian solution is likely to be what is called “simple and elegant”, more like the carburetor of an old-fashioned car than fancy electronic fuel injection. Our gadget needs parts that actually make noise. Loudspeakers make sounds like human voices, music, bells, chimes, whistles, anything you … Continue reading Havana Sonic Attack Weapon — Let’s Build It! Part 5
Let’s refer back to the Polish paper quoted in Havana Sonic Attacks — Addendum for techies only: Roshchin and Dobroserdov indicated that levels of 90–110 dB within the range of lower frequencies (21kHz) and 110–115 dB within the range of higher frequencies (40kHz) constituted the limit of occurrence of functional changes [36]. Since we’re designing … Continue reading Havana Sonic Attack Weapon — Let’s Build It! Part 4
I was going to get right to blowing up Patient Zero’s head. But then I remembered that there might be someone in the audience whose sole purpose in life is to make the presenter miserable, by asking a show-stopper question. Richard Feynman, known for his kindness in all other ways, was famous for this. Some … Continue reading Havana Sonic Attack Weapon — Let’s Build It! Part 3
Let’s continue building our hypothetical device. If it’s doable, it is probably shaped by the considerations that follow. Note: if what follows is correct, the attacks should correlate to nights of low wind velocity, with the position of the attacker sheltered from wind by a building wall. Absolute calm is essential. If you want to … Continue reading Havana Sonic Attack Weapon — Let’s Build It! Part 2
We’re not actually going to. This will be informed speculation, guided by open source physics and electronics. But perhaps it will inspire some young budding Dr. Evil to a lifetime of work. It all depends on your idea of fun. Let’s consider the general shape of the package: Futuristic. Eventually, all surfaces will be active. … Continue reading Havana Sonic Attack Weapon — Let’s Build It! Part 1
More bedtime reading for super techies only. We continue from Sonic Attacks on U.S. and Canadian Diplomats in Cuba; a Kremlin Op?, followed by Havana Sonic Attacks — for Super Techies Only, and Havana Sonic Attacks — Addendum for techies only. Since the ultrasonic microphone has very limited use, and none at all interior to … Continue reading Havana Sonic Attacks for Super Techies Part 2
With the Houston deluge, this is not the time for a serious post. If you’re curious enough to want more detail on how I thought about the Havana attacks, this is bedtime reading — for super techies. My reaction to the initial report, by CNN on August 14, was the possibility of a case of … Continue reading Havana Sonic Attacks — for Super Techies Only
CNN: Was Cuban sonic attack a weapon, or an accident? This is Bad Journalism. The three reporters reached out to individuals they describe as “experts”. But they aren’t experts. They are just people the three authors can talk to. With the Information Explosion has come increasing specialization. A hundred years ago, a well-rounded liberal arts … Continue reading Havana Sonic Attack; CNN Consults “Experts”