Analytical and numerical study of acoustic intensity field in irregularly shaped room

Meissner, Mirosław

doi:10.1016/j.apacoust.2012.11.009

Cited by 15 publications

(3 citation statements)

References 19 publications

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“…where the pressure amplitude P and the pressure phase φ are given by [30] PðrÞ ¼ ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ffi…”

Section: Active and Reactive Components Of The Sound Intensityunclassified

“…Statistical properties of the active and reactive intensities in reverberant enclosures subjected to pure-tone excitation have been studied by Jacobsen and Molares [27]. Behavior of scalar and vector characteristics of steady-state sound field inside coupled rooms and irregular enclosures has been analyzed by the author in papers [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation of acoustic field in enclosures: Evaluation of active and reactive components of sound intensity

Meissner

2015

Journal of Sound and Vibration

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Section: Active and Reactive Components Of The Sound Intensityunclassified

Section: Introductionmentioning

confidence: 99%

Numerical investigation of acoustic field in enclosures: Evaluation of active and reactive components of sound intensity

Meissner

2015

Journal of Sound and Vibration

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“…Other versions of this method may be found in (Xu, Sommerfeldt, 2010). The Fourier method is difficult to apply for rooms with complex shapes and complex boundary conditions, and in more practical cases it is unusable (Meissner, 2012;2013a;2013b).…”

Section: Introductionmentioning

confidence: 99%

An Influence of the Wall Acoustic Impedance on the Room Acoustics. The Exact Solution

Brański

Kocan-Krawczyk

Prędka

2017

Archives of Acoustics

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The Fourier method is applied to the description of the room acoustics field with the combination of uniform impedance boundary conditions imposed on some walls. These acoustic boundary conditions are expressed by absorption coefficient values In this problem, the Fourier method is derived as the combination of three one-dimensional Sturm-Liouville (S-L) problems with Robin-Robin boundary conditions at the first and second dimension and Robin-Neumann ones at the third dimension. The Fourier method requires an evaluation of eigenvalues and eigenfunctions of the Helmholtz equation, via the solution of the eigenvalue equation, in all directions. The graphic-analytical method is adopted to solve it It is assumed that the acoustic force constitutes a monopole source and finally the forced acoustic field is calculated. As a novelty, it is demonstrated that the Fourier method provides a useful and efficient approach for a room acoustics with different values of wall impedances. Theoretical considerations are illustrated for rectangular cross-section of the room with particular ratio. Results obtained in the paper will be a point of reference to the numerical calculations.

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Reduction of Low Frequency Acoustical Resonances Inside Bounded Space Using Eigenvalue Problem Solutions and Topology Optimization

Błażejewski

2016

Dynamical Systems: Theoretical and Experimental Analysis

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Analytical and numerical study of acoustic intensity field in irregularly shaped room

Cited by 15 publications

References 19 publications

Numerical investigation of acoustic field in enclosures: Evaluation of active and reactive components of sound intensity

Numerical investigation of acoustic field in enclosures: Evaluation of active and reactive components of sound intensity

An Influence of the Wall Acoustic Impedance on the Room Acoustics. The Exact Solution

Reduction of Low Frequency Acoustical Resonances Inside Bounded Space Using Eigenvalue Problem Solutions and Topology Optimization

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