Abstract
The development of standardized tests for rating the impact transmission behaviour of different wall constructions and the improvement of deficient constructions are considered. Sound transmission of single impacts on walls was investigated in terms of both sound pressure and panel acceleration signatures, and the noise generation and transmission mechanisms were identified. A literature review of the subjective annoyance response to impulsive noise led to the development of an objective technique based on a peak-hold sound level meter having a 5 ms response time and C weighting. Various wall constructions were compared using a standardized impactor and the peak hold meter. Impact noise transmission was found to be predominantly due to structure-borne vibration; consequently transmission may be reduced by vibration isolation techniques. A procedure to rate impact noise transmission through wall systems is suggested, based on the subjective annoyance response to impulsive noise.
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