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Point of Reference
10 dBA is the sound level of normal human breathing. To put it into perspective, thunder is a whopping 120 dBA...more
How loud is too loud?
Noise above 85 dBA over time will cause hearing loss. In general, the louder the noise, the less time required before hearing loss...more
Part E
Resistance of the Passage of Sound
Why are the new standards in Part E necessary? They are designed to improve modern living.
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In Area R
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