The common denominator here seems to be that it happens in secure US Government buildings. I have to wonder whether it’s related to the security technology itself, like some noise cancellation tech incorporated into the standard SCIF security system interferes badly with the ultrasound sensors of the intruder alarms to create these noise artifacts…

From the article:

> We also found electronics stores that carry high- power ultrasonic jammers that cause microphones to malfunction

and:

  If a signal from that caliber jammer were to combine with a second ultrasonic source, audible by-products could result.

Yes, still highly consistent, given [1].

[1] https://www.theguardian.com/us-news/2021/may/05/brood-x-cica...

The alleged whitehouse incident was in november. I don't think it was an attack, but it wasn't cicadas.

... or someone is using correlation to make it look like cicadas.

Just curious, why is this comment being heavily downvoted? edit: why was, since it's now back up

> Just curious, why is this comment being heavily downvoted? edit: why was, since it's now back up

Some people weirdly seem to be really, really invested in "Havana syndrome" being psychosomatic/mass hysteria/US footgun/anything besides a deliberate attack.

like hn poster's bizarre and honestly naive infatuation with the concept of covid-19 being escaped from a lab?

quit, it is embarrassing

Or countermeasure going haywire.

From the article:

"While the equipment we used in our Cuban re-creation is relatively bulky, ultrasonic emitters can be quite tiny, no larger than a piece of Rolo candy. Online, we found a manufacturer in Russia that sells a fashionable leather clutch that conceals an ultrasonic emitter, presumably to jam recording devices at cocktail parties. We also found electronics stores that carry high- power ultrasonic jammers that cause microphones to malfunction. One advertised jammer emits 120-dB ultrasonic interference at a distance of 1 meter. That’s like standing next to a chainsaw. If a signal from that caliber jammer were to combine with a second ultrasonic source, audible by-products could result."

Consider an countermeasure ultrasonic emitter intended to jam microphones in proximity to, say, a spy emitter using ultrasonic sound as a carrier wave for a microphone, as described in the article.

Or someone just had a bad headache. I don't think it's very likely that there's a secret energy weapon hidden in the bushes near the whitehouse.

Or countermeasure going haywire. At any rate, not cicadas.

Yes, that seems like an obvious dead end, if not decoy.

Yes, probably caused by those UFOs that everyone keeps talking about.

Much more plausibly, people in the US military and/or secret services are trying to invent trouble in the wake of recent relative peace.

Did you reply to the right comment? Your comment is a complete non-sequitor

> the wake of recent relative peace.

Huh? January 6th was only ~6 months ago and the fall out from that continues.

Cyberwarfare continues to ramp up.