Every American government worker in China was warned by the U.S. Embassy on Wednesday to be especially alert for suspicious or unusual sounds. They may come from a secret high tech spy-ray or sonic nerve disruption device. The Chinese appear to be using the same technology that was used to attack at least 24 diplomats in Cuba with a crippling “high pitch beam of sound.” One State Department employee stationed in Guangzhou had to be airlifted home to the states.
Embassy Spokesman Jinnie Lee confirms the staffer displayed “a variety of physical symptoms” between late 2017 through April 2018.” After he was recently evaluated by doctors in the U.S., “the embassy learned that the clinical findings of this evaluation matched mild traumatic brain injury.”
Even though classified as “mild,” the injury, similar to a concussion, is still considered a big deal. The fact that any brain injury at all can be caused by sound or energy waves is a frightening concept, especially if it was done intentionally.
Anyone hearing “any unusual acute auditory or sensory phenomenon,” particularly “unusual sounds of piercing noises,” are instructed to move away from the area immediately until clear of any noticeable signs.
Don’t try to track it down, just go, officials advise. “Do not attempt to locate their source. Instead, move to a location where the sounds are not present.” Anyone experiencing any ill effects should consult a doctor.
According to a statement issued by Lee, the bulletin was issued because the State Department “is taking this incident very seriously and is working to determine the cause.”
The staffer began reporting “subtle and vague, but abnormal, sensations of sound and pressure,” at the end of 2017 and after the incidents continued through April he was sent home for a more thorough medical work-up.
The latest reports out of China are way too similar to what happened last year in Cuba to be a coincidence. This makes it a whole new ballgame. Those affected in Cuba were also diplomats. They too, suffered “concussion-like symptoms.”
The complaints reported were a lot more serious than just an annoyance from an irritating sound, the workers were reporting hearing loss and dizziness to the point of falling over.
Whatever they were affected by caused a lot more than just headaches. The workers couldn’t think straight, couldn’t sleep, and felt tired all the time.
U.S. Officials have been hesitant to point the finger at Cuba’s government because there isn’t any proof. Even though two dozen people have the exact same story, it could possibly have been a natural phenomena.
If not actually “natural” it could at least have a less sinister “accidental” source. Mass hysteria was considered and ruled out. You can’t hysterically give yourself a concussion.
Researchers at the Ann Arbor campus of the University of Michigan have come up with one rational explanation. They admit it does not prove anything, but it does give a lot of insight into what might be happening.
They were already working in the field of “ultrasonic cybersecurity” when the headlines caught their attention like a lure grabs a bass.
Sounds in the ultrasonic range, above human hearing at 20 kilohertz and up, can be used to do all sorts of tricks. In 2017 they showed how they could send commands to a home voice recognition system like Siri or Alexa that people can’t hear.
The chip can’t hear those frequencies either but “because of nonlinearity in the smartphone’s microphone, the ultrasound produced by-products at audible frequencies inside the circuitry of the microphone. Thus the IMD signal remains inaudible to humans, but the smartphone hears voices.”
They zeroed in on the effects of interference. By using a sample sound that was recorded in Cuba, they analyzed its properties. They were able to reproduce the same effect by using two ultrasonic transmitters to selectively interfere with each other.
“For fun, we also experimented with using an ultrasonic carrier to eavesdrop on a room. In this kind of setup, a spy places a microphone to pick up speech and then uses the relatively low-frequency audio signal to modulate the amplitude of the carrier wave. The carrier wave then gets picked up by an ultrasonic-capable sensor located some distance away and demodulated to recover the original audio.”
They eavesdropped on a pop record they had in their collection and sent it on the 32-kHz carrier wave their calculations indicated.
“When we introduced a 25-kHz sine wave to interfere with this covert ultrasonic channel, IMD in the air produced a 7-kHz audible tone with ripples associated with the tones of the song.”
The sounds can only be heard where the two signals cross. “That finding is consistent with what some diplomats reported in Cuba. The sounds heard tended to be confined to a part of the room. When they moved just a few steps away, the sound stopped.”
China has been cuddling up to Cuba for a long time now and this could demonstrate a sharing of the secret technology.
With relations between Beijing and Havana at an all time high, in the past two years there have been “frequent high-level visits between officials from the two countries.” They are particularly interested in “biotechnology.”
“China is looking to further expand ties in this area, above all in the field of bio-medicine,” China’s Director General of Latin American and Caribbean Affairs told reporters.
The Chinese government gave standard assurances that they “are also investigating and taking appropriate measures,” but the Chinese foreign ministry isn’t responding to reporters.