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Reverberation time formulae reconsidered.
J Acoust Soc Am 1972 Aug; 52(2):493-494
The widely used reverberation time formula due to Eyring was derived on the assumption of step-wise drops in the energy level of a diffuse sound field. The argument, besides being difficult to follow, was not justified from the statistical notion of a diffuse field. It is found that Eyring's formula can be extracted from a difference equation based on an energy principle which preserves the continuous nature of the decay process. Interpretations of the average absorption coefficient are also given.
NIOSH-Publication; NIOSH-Grant; Noise-induced-hearing-loss; Noise-control; Acoustics
Occupational Health University of Pittsburgh 130 Desoto St Pittsburgh, PA 15213
Issue of Publication
Journal of the Acoustical Society of America
University of Pittsburgh, Pittsburgh, Pennsylvania
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division