Two parameters describe sound insulation; Dw and Rw. Dw is the insulation between rooms. Rw is the lab-tested insulation of a wall/floor...more
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more
For further Part_E information for your area, be sure to check out Sound-Testing-.co.uk.
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