[anandkulkarni]

Kevin Fu and team at UMich's security & privacy group provided the most plausible explanation for what's going on here. https://spectrum.ieee.org/semiconductors/devices/how-we-reve...

[sailingparrot]

Last time this research was mentioned, many were not impressed by it's overall quality.

Ref: https://news.ycombinator.com/item?id=16597036

[ryanlol]

It's only the "most plausible" explanation due to the general lack of public explanations.

It's still an extremely poor explanation.

[jimrandomh]

tl;dr: Two ultrasound devices in the same room can interact to produce audible sound at dangerous volume under some circumstances. Ultrasound devices include bugs, microphone jammers, and many other things.

[gruez]

but if you have two 60db transmitters, the max you can produce (from my understanding) with constructive interference is 70db , since db is logarithmic. so does that mean the transmitters in question were already transmitting at 100+db?

[mhb]

Also tl;dr: They don't explain anything about how that can cause the observed symptoms.