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2011 | 119 | 6A | 1031-1034
Article title

Numerical Modelling of Coupled Rooms: Evaluation of Decay Times via Method Employing Hilbert Transform

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EN
Abstracts
EN
In the paper, a usefulness of the Hilbert transform in a computer modelling of reverberant behaviour of rooms is demonstrated for the enclosure consisting of two coupled subrooms. In numerical simulations a decay of the sound pressure is computed and the Hilbert transform methodology is used to determine an envelope of this decay. Calculation results have shown that, because of the mode localization, a distribution of absorbing material has a great influence on decay times evaluated from changes in the pressure envelope. For example, when a difference between the sound damping in subrooms is large, the localization effect is responsible for a creation of a nonlinear decay of the sound pressure level characterized by rapid early and slow late sound decays.
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Publisher

Year
Volume
119
Issue
6A
Pages
1031-1034
Physical description
Dates
published
2011-06
Contributors
author
  • Institute of Fundamental Technological Research, Polish Academy of Sciences, A. Pawińskiego 5B, 02-106 Warsaw, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv119n6a27kz
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