Analysis of the Sound Field in Enclosures
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2009, Vol 6, Issue 1
Abstract
Steady-state sound field in closed spaces may be calculated as a series of normal modes of oscilatings. Experimental results are not explained completely by this theory and for these differences should be an additional term representing the direct spherical radiation at the reverberant field. In the paper it is shown that the sound field contains the direct wave as well as the standing waves. In addition the paper shows the calculation particularity of the acoustic field in low frequencies.
Authors and Affiliations
Ioan Magheţi, Mariana Savu, Nicolae Enescu
Keywords
Related Articles
- EP ID EP160425
- DOI -
- Views 65
- Downloads 0
Determination of the Natural Frequencies of Beams Using Sound Pressure
This paper presents a method to determine the natural frequencies of transversal bending vibrations of beams and plates by means of time-history analysis. As excitation source the sound pressure produced by a speaker was...
A Study on Free Vibration of Visco-elastic Tapered Plate with Clamped Ends
A mathematical analysis is presented here to analyze the free vibration of visco-elastic isotropic rectangular plate. The main objectives of the study are to assist engineers and scientists in designing of structures whi...
Dynamic Analysis of Thin Plates with Defects by Experimental and FEM Methods
In this paper an analysis regarding the dynamics of thin rectangular plates embedded on all edges is presented; aiming to highlight the effect of defects upon their natural frequencies. The first thirty natural frequenci...
Evaluation of the Dissipated Energy in Viscoelastic or Hysteretic Seismic Isolators
This paper represents the result of experimental and theoretical researches concerning the behaviour and the performance level specific to neoprene bearings subjected to conformity assessment. The tandardized test involv...
The Effect of the Internal Dissipation of the Energy in the Supports of Composite Neoprene used for the Basis Isolation under the Seismic Action
This work continues the researches who want to note the dissipated energy inside the viscoelastic materials harmonical excited. In this case we analyze the effect of the internal energy dissipation for the composite mate...