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Loudspeakers - nyu.edu
www.nyu.eduLoudspeakers Microphone: acoustical sound energy electrical energy Loudspeaker: electrical energy acoustical sound energy
Recent Trends in Porous Sound-Absorbing Materials
www.sandv.com12 SOUND & VIBRATION/JULY 2010 www.SandV.com Sound-absorbing materials absorb most of the sound energy striking them, making them very useful for the control of noise. They are used in a variety of locations – close to sources of noise,