[oofbey]

The thing Benn totally avoids is ever putting decibel levels on anything he measures. Yes NASA showed clearly that infrasound is dangerous at 140 dB (omg of course) and at 100dB it’s annoying and has psychological effects. But all the research says that below about 70dB there’s nothing harmful. Of course there must be some decibel level below which it’s completely innocuous. But Benn never goes there - infrasound bad.

I would guess a chunk of this is because Benn’s home grown microphone simply hasn’t be calibrated to any reference standard - because that would require access to expensive lab-quality equipment he doesn’t have or hasn’t bothered to find. Why do the really hard work to make things rigorous when it would make the YouTube story less compelling?