asteroza + canceller   5

Subwavelength total acoustic absorption with degenerate resonators
Two stage sound absorber. Uses a primary absorber/resonator that leaks sound at specific frequency, which is then absorbed by a specifically tuned secondary absorber/resonator.
acoustic  sound  canceller  cancellation  absorber  dual  resonator  silencer  physics  research  technology  materials  science  Delicious 
july 2016 by asteroza

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