April 2012
Intermediate to advanced
176 pages
7h 53m
English
USING THIS “SOUND SUCKER” DEVICE allows you to experience a curious sensation: it’s as if sound is not only being blocked, but actually sucked away from your ear.
The sound sucker works on a narrow range of frequencies. My testing showed it most effective a few cycles to either side of 660Hz (depending on the amount of gelatin), and the effect is most noticeable in a room with a wide spectrum of ambient noise frequencies.
Can you explain this acoustic phenomenon? Or better yet, can you draw a simple diagram? Share your explanation with us at makezine.com/30/123_soundsucker.
YOU WILL NEED
Boiling water
Gelatin dessert mix such as Jell-O, Knox, etc.
Coffee stirrers, plastic, thin, hollow, 5½" long (1 box) ...