PMID: 15376662Sep 21, 2004Paper

Statistical-acoustics models of energy decay in systems of coupled rooms and their relation to geometrical acoustics

The Journal of the Acoustical Society of America
Jason E SummersYasushi Shimizu

Abstract

An improved statistical-acoustics model of high-frequency sound fields in coupled rooms is developed by incorporating into prior models geometrical-acoustics corrections for both energy decay within subrooms and energy transfer between subrooms. The conditions under which statistical-acoustics models of coupled rooms are valid approximations to geometrical acoustics are examined by comparison of computational geometrical-acoustics predictions of decay curves in two- and three-room systems with those of both improved and prior statistical-acoustics models. The accuracy of the decay model used within subrooms is found to have a primary influence on the accuracy of predictions in coupled systems. Likewise, nondiffuse transfer of energy is shown to significantly affect decay of energy in systems of coupled rooms. The decrease in energy density of the reverberant field with distance from the source, which is predicted by geometrical acoustics, is found to result in spatial dependence of decay-curve shape for certain coupling geometries. Geometrical effects are shown to contribute to the failure of statistical-acoustics models in the case of strong coupling between subrooms; thus, previously proposed statistical-acoustics criteria ca...Continue Reading

References

Oct 29, 2000·The Journal of the Acoustical Society of America·A Le Bot, A Bocquillet

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Citations

Apr 12, 2011·The Journal of the Acoustical Society of America·Hongjie PuJiqing Wang
Jun 8, 2013·The Journal of the Acoustical Society of America·Ning XiangYun Jing
Jul 12, 2012·The Journal of the Acoustical Society of America·Mirosław Meissner
Sep 11, 2009·The Journal of the Acoustical Society of America·Francesco Martellotta
Mar 12, 2009·The Journal of the Acoustical Society of America·Francesco Martellotta
Mar 3, 2011·The Journal of the Acoustical Society of America·Ning XiangPhilip Robinson
Jan 18, 2007·The Journal of the Acoustical Society of America·Ning Xiang, Tomislav Jasa
May 13, 2014·The Journal of the Acoustical Society of America·Paul LuizardBrian F G Katz
Jun 8, 2007·The Journal of the Acoustical Society of America·Yun Jing, Ning Xiang
Aug 1, 2016·The Journal of the Acoustical Society of America·Zühre Sü GülMehmet Çalışkan
Jul 16, 2005·The Journal of the Acoustical Society of America·Ning XiangMendel Kleiner
Jul 2, 2018·The Journal of the Acoustical Society of America·Ning XiangMichael Vorländer
May 3, 2019·The Journal of the Acoustical Society of America·Zühre Sü GülMehmet Çalışkan
Jan 31, 2021·The Journal of the Acoustical Society of America·Zühre Sü Gül

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