Table 1.
The acoustic properties of the cells for trapping
| Cell density (kg/m3) | Cell compressibility (×10−10 Pa−1) | Acoustic impedance (MRayl) | |
|---|---|---|---|
| Cell 1 | 1,000 | 4.4 | 1.51 |
| Cell 2 | 1,210 | 3.3 | 1.91 |
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