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Old 07-30-2021, 08:22 AM   #1
SevenZero
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What is the greatest sound reduction that can be achieved by car windows?

I have seen these solutions when it comes to glass, not sure which ones are applicable to car widows:

1. Acoustic laminated glass, using PVB or EVA interlayer. Can reach 40 STC.
2. Double-Glazed Glass, also reaches 40 STC.
3. A combination of the two above, reaching 50 STC.
4. Acoustic film. Have seen quotes of 3 to 5 dB noise reduction.

I am curious also as to what is the STC or SRI of the various types of bulletproof glass. Are there any commercially available bulletproof windows designed to also be sound resistant?
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