Make: Easy 1+2+3 Projects

Sound Sucker

By William Gurstelle ■ Illustrations by Damien Scogin

You will need

Boiling water

Gelatin dessert mix such as Jell-O, Knox, etc.

Coffee stirrers, plastic, thin, hollow, 5½" long (1 box)

Mug, large, flat-bottomed

Frequency generator (optional) or frequency generator smart-device app

Bow

Spoon

Measuring cup

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), ...