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Tuesday, July 9 • 11:30 - 11:50
SYNTHESIS OF STRUCTURE-BORNE SOUND BY CONVOLUTION OF THE IMPACT FORCE OF A STANDARDIZED RUBBER BALL AND THE IMPULSE RESPONSE FUNCTION OF THE BUILDING ELEMENT

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In this paper some typical characteristics of the impact force when dropping a standardized rubber ball, as found in literature, are discussed. In addition, a simplified force function is proposed. The acoustic response due to dropping a standardized rubber ball is calculated by means of a convolution of a measured impulse response function and the impact force functions. The approach is applied to a floor to reconstruct the acoustic response in the receiving room, using time domain data of the impact force (as measured by Hopkins et al. [7]) and those obtained by a simplified force function. The results are compared with each other as well as with a directly measured acoustic response of the floor system.

Moderators
avatar for Naval Agarwal

Naval Agarwal

Technical Fellow, The Boeing Company
avatar for Roderick Mackenzie

Roderick Mackenzie

Senior Acoustical Consultant, Soft dB Inc.

Authors

Tuesday July 9, 2019 11:30 - 11:50 EDT
St-Laurent 4
  T11 Room & build. acoustics, SS04 Struct-borne & impact noise in bld