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Originally Posted by schmidtj
Just what is "acoustic-dampening glass" and how does it differ from "non-acoustic-dampening glass"?
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It is just what it SOUNDS like. It cuts down on some noise infiltration in the car making it quieter while on the road. The short version - they use plastic laminates(PVB's) embedded in the glass to attenuate sound in certain frequencies.
Here is something DuPont did to deaden sound with auto glass:
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With SentryGlas Acoustic™ – a new polymer designed specifically to reduce noise – DuPont transcends the acoustic performance of traditional laminated glass by deadening sound (dampening) at frequencies most objectionable to human ears: in the range of 1000 to 3000 Hz.
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A short article explaining it:
http://www.glassfiles.com/library/22/article446.htm
And if you are a glutton for details, read this multi-page article:
http://www.findarticles.com/p/articl...12/ai_n9303485