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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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In Area Y
Part L1B Compliance in Yarm, Part L1B Compliance in Yarmouth, Part L1B Compliance in Yat, Part L1B Compliance in Yate, Part L1B Compliance in Yateley, Part L1B Compliance in Yatton, Part L1B Compliance in Yaxley, Part L1B Compliance in Yeadon, Part L1B Compliance in Yelverton, Part L1B Compliance in Yeovil, Part L1B Compliance in York, Part L1B Compliance in Yorkshire,