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Good Hearing?
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
Sound Insulation
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
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Ventilation Testing & Compliance in Shropshire, Ventilation Testing & Compliance in Somerset, Ventilation Testing & Compliance in South Yorkshire, Ventilation Testing & Compliance in Staffordshire, Ventilation Testing & Compliance in Stirlingshire, Ventilation Testing & Compliance in Strathclyde, Ventilation Testing & Compliance in Suffolk, Ventilation Testing & Compliance in Surrey, Ventilation Testing & Compliance in Swansea County,