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Introduction and Scope
Sound Transmission Loss Tests
1+ 2 Discussion
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4000 BAND CENTER Acous acoustical air flow air infiltration air leakage air space aluminum ASHRAE ASTM average BAND CENTER FREQUENCY Beranek brick veneer Btu hr Building Insulation cavity insulation core wood door correspond crack width data for sealed doors and windows doors or windows double hung window double-hung window drywall effective thermal transmittance equation experimental filler wall frame frequency data ft picture window ft wood glazed single strength gypsum board heat flow Hz Figure insulating glass lb/sq ft locked loss vs frequency Marsh 63 measured perimeter cracks plastic weather strip present investigation resilient channel reverberant rooms sealed windows sheathing shown in Figure single glazed single light solid core wood sound insulation sound pressure level sound transmission loss SOUND TRANSMISSION TEST Specimen STC sq ft storm door storm sash surface Symbol Test temperature thermal resistance thickness transmission coefficient unlocked window area wood siding wall wood stud exterior