Vol. 13 No. 3 (1985)

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Editorial

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1-1

Technical Articles

Analysis of criteria for impulse noise in the context of regularity limits on exposure in the workplace

R. Hetu

4-18
Enclosures to Reduce Noise from Heat Pumps: Four Case Studies

J. Fraser, J. D. Quirt

19
Study of the modelling of interference effects obtained using an out-of-phase perforated barrier

L. Droin, J.-M. Rapin, M. Amram

32-39
Efficiency of a sound barrier in the presence of surfaces of different impedances

J.L. Berry, J. Nicolas

40-53