The sound field within a rigid porous layer

✍ Scribed by Keith Attenborough; James M. Sabatier; Carl Frederickson

• Book ID: 102988246
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 702 KB
• Volume: 45
• Category: Article
• ISSN: 0003-682X
• DOI: 10.1016/0003-682x(95)00002-q

✦ Synopsis

The sound field within a layered porous granular medium may be explored by means of suitably protected probe microphones.

The jield within a system consisting of a granular surface layer above a thick porous substrate with considerably higher Jlow resistivity is modelled by assuming the granular media to be characterized by ungorm slit-pores within a rigid solid matrix and by applying boundary conditions at each interface. The predicted relative amplitude spectrum within the surface layer is in@enced by interferences between the first few wave components of the internally rejected field. Predictions are in qualitative agreement with data obtained in washed sand and gravel.