An impedance tube submerged in a liquid for the low-frequency transmission-loss measurement of a porous material

作者：Mia Oblak; Miha Pirnat; Miha Boltear

来源：APPLIED ACOUSTICS, 2018, 139: 203-212.

DOI：10.1016/j.apacoust.2018.04.014

• Impedance tube
• Metal foam
• Low frequency
• Waveguide
• Attenuation
• Phase velocity

Abstract(#br)According to the standard ASTM E2611 an impedance tube can be used to measure the sound transmission and reflection losses in an absorption material. However, application in a liquid medium in the low-frequency range presents difficulties with respect to the size of the structure and th...

• 出版日期2018