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Radio2speech: high quality speech recovery from radio frequency signals

https://zhaorunning.github.io/radio2speech/

given human brains still send minuscule signals to the speech muscles when doing "inner speech", given that may be enough to produce tiny vibrations invisible to the naked eye but visible to high speed cameras/radar, the approach used for this academic work may just be enough to extract people's inner speech wirelessly.

Radio2speech: high quality speech recovery from radio frequency signals https://zhaorunning.github.io/radio2speech/ given human brains still send minuscule signals to the speech muscles when doing "inner speech", given that may be enough to produce tiny vibrations invisible to the naked eye but visible to high speed cameras/radar, the approach used for this academic work may just be enough to extract people's inner speech wirelessly.

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what's the difference between this and a audio bug. they take sound, convert it to RF, traverse the medium and is then decoded via hetrodyne receiver.. This appears that it can be done from a remote location. they have been doing this for decades by amplifying minuscule vibrations from glass windows with laser. nothing really new here.