MOLDED LIGHTWEIGHT FOAM ACOUSTICAL BARRIER AND ITS METHOD OFAPPLICATION

摘要

An acoustical barrier (10) comprises a layer of molded firm-flexible foam (3 8) that is generally configured to match the acoustical requirements in an environment and mounted against a sound-transmitting substrate and can have one or more areas of patterned recesses (48) along a substrate-facing side o r varying thickness tailored to the intensity of sound transmitted through the sound-transmitting substrate with or without a thin, impervious barrier laye r overlying the foam layer.