Researchers Find that Hole Punched Walls May Be Better Soundproofing

Researchers Find that Hole Punched Walls May Be Better Soundproofing

Sonia Zjawinski
Oct 31, 2008

Who knew that having swiss cheese walls would actually help with noise reduction. A story published in New Scientist reports that researchers at the Polytechnic University of Valencia have discovered that punching holes into partitions actually decreases sound waves. When holes are slightly smaller than the wavelength, the sound waves can be trapped and reflected. The holes also allow the plate to resonate in a way that causes the sound waves to interfere and cancel out.

What does this mean for everyday Joe Six Packs (sorry I couldn't resist)? Find out after the jump...

The researchers are hoping that this discovery will help with noise management in products, city landscape, and homes. It could help reduce noise in situations where air circulation is important in preventing overheating, like your hard working computer tower or electrical transformers near homes. It could also be used in terms of soundproofing in residences. No more slamming your broom against the ceiling to tell your neighbors to turn it down a notch.

Right now the researchers have only tested this with metal sheets in water. They've yet to see if this works back on land and with lower frequency sound.
via New Scientist
Photo: Diller + Scofidio

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