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lebb New user 29 Posts |
I was asking about spooky organ music in the Bizarre area, and poking around the net a bit.
Seems 20 Hz signals fall below the range of hearing, but do cause a feeling of unease. I was wondering if anyone has tried building one of these devices https://en.wikipedia.org/wiki/Rotary_woofer seen here https://www.youtube.com/watch?v=E7Bkrypxzs4 regards B |
The Magic Cafe Forum Index » » The workshop » » Rotary Woofer (0 Likes) |
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