Hooked on Phononics
Filter sound frequencies with an array of metal tubes.
Block audible frequencies with this series of tubes.
Photography by Charles Platt
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 mysterious physical properties, is the subject of numerous academic papers, and could provide a unique “wow” factor to boost your status in your power-nerd peer group, a phononic band-gap filter could be just the thing. Best of all, you can build one for well under $100 using wood, electrical ...
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