Will Serenity Come To The Factory Floor?

NEXT TIME YOU'RE FEELING deafened and defeated by a noisy vacuum cleaner or refrigerator, ponder the gongs of Korean temple bells. These huge, barrel-shaped wonders vibrate much like the cylindrical metal casings on noisy machinery such as refrigeration and heat pump compressors. By understanding how the bells produce their deep sounds, Purdue University engineering professor Werner Soedel thinks he can reduce mechanical racket.

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