In-situ sound insulation measurement when a room is very absorptive

Authors

  • T.R.T. Nightingale Inst. of Res. in Construction, Natl. Res. Council, Montreal Road, Ottawa, Ont. K1A, Canada
  • R.E. Halliwell Inst. of Res. in Construction, Natl. Res. Council, Montreal Road, Ottawa, Ont. K1A, Canada

Keywords:

Acoustic variables measurement, Acoustic wave absorption, Microphones, Reverberation, Sensitivity analysis, Sound insulation, Sound insulation measurement, Transmission loss test methods

Abstract

The sensitivity of the ASTM E336 to absorption in either the source or receiving room and its effect on the number of microphones needed to sample the resulting field was studied. Nine microphone positions satisfying the ASTM E336 location requirements sampled the SPL. The apparent transmission loss (ATL) was measured in both directions between the three possible room pairs: horizontally separated by a partition wall, vertically separated by a floor, and diagonally where there was no common element. The results indicate that measurements in rooms having absorption typical of furnished multifamily dwellings are possible if the room volumes are adequately sampled.

Additional Files

Published

2001-09-01

How to Cite

1.
Nightingale T, Halliwell R. In-situ sound insulation measurement when a room is very absorptive. Canadian Acoustics [Internet]. 2001 Sep. 1 [cited 2024 Sep. 11];29(3):60-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1383

Issue

Vol. 29 No. 3 (2001)

Section

Proceedings of the Acoustics Week in Canada

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