Figure 13
From: SeMSA: a compact super absorber optimised for broadband, low-frequency noise attenuation

Experimental absorption profiles of 15 mm SeMSA cell. MPP porosity is varied by changing number of holes. \(\bar{\alpha }=0.4\) for 4 hole case.
From: SeMSA: a compact super absorber optimised for broadband, low-frequency noise attenuation

Experimental absorption profiles of 15 mm SeMSA cell. MPP porosity is varied by changing number of holes. \(\bar{\alpha }=0.4\) for 4 hole case.