Hooked on

Phononics

Filter sound frequencies with an array of metal tubes. By Charles Platt

Block audible frequencies with this series of tubes.

Few people can claim to own a phononic band-gap filter — and even if they did, they might have a hard time explaining why they need one.

Still, if you like the idea of a device that has mysteri- group, a phononic band-gap filter could be just the ous physical properties, is the subject of numerous thing. Best of all, you can build one for well under academic papers, and could provide a unique “wow” $100 using wood, electrical conduit, and maybe a factor to boost your status in your power-nerd peer few cable ties.

Photography by Charles Platt

78 Make: Volume 15