Open Access
Table 1
Geometric parameters of the Brüel & Kjaer Type 4206 impedance tube setup.
| Parameter | Value |
|---|---|
| Tube length L | 300 mm |
| Tube diameter D | 100 mm |
| Distances d 1, d 2, d 3 | 100 mm |
| Specimen thickness t | {30, 40, 50, 60} mm |
| Cross-sectional area shape | circular |
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