Open Access
Table 1
Geometrical dimensions of three resonators with the same first impedance peak f
1 and different cutoff frequencies f
c. First peak and cutoff frequencies in Hz, all other quantities in mm. The first hole is located at 
. Consider 
for the cylinder.
|
f 1 | f c | L | h | a | b |
|
|---|---|---|---|---|---|---|---|
|
185 | 1000 | 398.8 | 9.8 | 6.5 | 2.5 | 16.3 |
|
185 | 1500 | 417.0 | 9.8 | 6.5 | 4.0 | 16.3 |
|
185 | 2000 | 426.0 | 9.8 | 6.5 | 5.8 | 16.3 |
|
185 | – | 450.0 | – | 6.5 | – | 0.0 |
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