Soundproof Windows do significantly MORE and cost significantly LESS . These numbers will not solve a noise problem. The maximum available perceived noise reduction still does not exceed 50%. It is very expensive to get a perceived noise reduction of anything beyond 20% with replacement windows. They can also say they reduce the noise more than 50% – true by instrument reading compared to a poorly sealing window. 120 decibels 120 dB sounds are 10 times less intense than 130 dB sounds. 90 decibels 90 decibels is comparable to the sound of a motorcycle and 10,000 times less intense than 130 dB. Compared to 70 dB, 130 dB is 1,000,000 times more intense.
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