Identifying acoustical coupling by measurements and prediction-models for St. Peter's Basilica in Rome
St. Peter's Basilica is one of the largest buildings in the world, having a huge volume resulting from the addition of different parts. Consequently, sound propagation cannot be interpreted using a co...
St. Peter's Basilica is one of the largest buildings in the world, having a huge volume resulting from the addition of different parts. Consequently, sound propagation cannot be interpreted using a co...
The variance of the discrete frequency transmission function of a reverberant room
This paper first shows experimentally that the distribution of modal spacings in a reverberation room is well modeled by the Rayleigh or Wigner distribution. Since the Rayleigh or Wigner distribution ...
This paper first shows experimentally that the distribution of modal spacings in a reverberation room is well modeled by the Rayleigh or Wigner distribution. Since the Rayleigh or Wigner distribution ...
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Investigation of acoustically coupled enclosures using a diffusion-equation model
J. Acoust. Soc. Am. Volume 126, Issue 3, pp. 1187-1198 (September 2009)
Issue Date: September 2009
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Recent application of coupled-room systems in performing arts spaces has prompted active research on sound fields in these complex geometries. This paper applies a diffusion-equation model to the study of acoustics in coupled-rooms. Acoustical measurements are conducted on a scale-model of two coupled-rooms. Using the diffusion model and the experimental results the current work conducts in-depth investigations on sound pressure level distributions, providing further evidence supporting the valid application of the diffusion-equation model. Analysis of the results within the Bayesian framework allows for quantification of the double-slope characteristics of sound-energy decays obtained from the diffusion-equation numerical modeling and the experimental measurements. In particular, Bayesian decay analysis confirms sound-energy flux modeling predictions that time-dependent sound-energy flows in coupled-room systems experience feedback in the form of energy flow-direction change across the aperture connecting the two rooms in cases where the dependent room is more reverberant than the source room.
©2009 Acoustical Society of America
©2009 Acoustical Society of America
| History: | Received 5 June 2008; revised 11 June 2009; accepted 12 June 2009 |
| Permalink: | http://dx.doi.org/10.1121/1.3168507 |
