6. Conclusions and Recommendations
6.1 Summary of Results Four makes of balls were compared with regard to the amount impulsive sound produced. Comparison of the mean sound exposure levels on the axis of play ranked the balls from quietest to loudest: Foam Quiet ball, Monarch, Onix, and Dura Fast 40 respectively. Overall the Foam Quiet ball was found to be eight to nine dBA quieter than the Dura and five to seven dBA quieter than the Monarch and Onix which were similar in performance. The acoustic spectra produced by the four balls varied in shape with the Foam Quiet ball having a flatter spectrum and the others having a maximum in the 1,000 Hz octave band. These balls created a ping sound from the paddle while the softer Foam Quiet ball produced a thud with relatively more low frequency energy. 6.2 Recommended Abatement Treatments The recommended abatement is a wall system with integrated acoustical absorption on the interior side. The height of the perimeter sound wall above the surface of the courts should be at least 10.0 feet. Entranceway walls covering the gaps between the perimeter walls on the north and south can be eight feet with a passage width not to exceed 6.5 feet. The dimensions in the figures below are approximate. The critical dimensions are the height of the sound wall with respect to the elevation of the pickleball courts and the locations of the end points. In particular, this abatement plan has been designed with overlapping walls to allow passage for ingress and egress. The distance between the overlapping walls and the width of the gap between the east and west walls must not exceed the dimensions in the drawing notes. The recommended sound wall placement is shown as red lines.
35 of 58 Spendiarian & Willis Acoustics & Noise Control LLC
12/15/2019
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