Experimental investigation of holes interaction effect on the sound absorption coefficient of micro-perforated panels under high and medium sound levels

This paper investigates the Hole Interaction Effect (HIE) and distribution effect on the sound absorption coefficient of perforated panels when submitted to medium and high

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

(3) It was shown that the perforated closed-cell metallic foam shows a similar behavior than a perforated rigid solid; however its sound absorption may be strongly modulated by

Figure 6: Effect of the open porosity ϕ and pore size Rp on the sound absorption criterion for various sample thicknesses with normal incidence excitation (Left: 3D, Right:

However, I very soon became interested in the work of Basil Bunting 2 , and if I were to claim one poet as the person who influenced me then that would be Bunting3. I believe

The proposed resulting model based on dimensional analysis and Forchheimer’s law sets the use of two dimensionless parameters and a limit Mach number which are shown to

In previous studies, we explored the effect of different ambient sounds (vocal vs. non- vocal) in such public areas as a car park and a metro station, and demonstrate the effect of