Physics – Classical Physics
Scientific paper
2010-08-05
Applied Acoustics 71, 6 (2010) 506-509
Physics
Classical Physics
Scientific paper
10.1016/j.apacoust.2010.01.007
This paper presents a straightforward application of an indirect method based on a three-microphone impedance tube setup to determine the non-acoustic properties of a sound absorbing porous material. First, a three-microphone impedance tube technique is used to measure some acoustic properties of the material (i.e., sound absorption coefficient, sound transmission loss, effective density and effective bulk modulus) regarded here as an equivalent fluid. Second, an indirect characterization allows one to extract its non-acoustic properties (i.e., static airflow resistivity, tortuosity, viscous and thermal characteristic lengths) from the measured effective properties and the material open porosity. The procedure is applied to four different sound absorbing materials and results of the characterization are compared with existing direct and inverse methods. Predictions of the acoustic behavior using an equivalent fluid model and the found non-acoustic properties are in good agreement with impedance tube measurements.
Atalla Noureddine
Doutres Olivier
Panneton Raymond
Salissou Yacoubou
No associations
LandOfFree
Evaluation of the acoustic and non-acoustic properties of sound absorbing materials using a three-microphone impedance tube does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evaluation of the acoustic and non-acoustic properties of sound absorbing materials using a three-microphone impedance tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaluation of the acoustic and non-acoustic properties of sound absorbing materials using a three-microphone impedance tube will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-438501