Hz | Sample One | Sample Two | Sample Three | Random Incidence Method |
60 | 0.88 | 0.91 | ||
65 | 0.86 | 0.93 | 0.96 | |
70 | 0.96 | 0.90 | 0.89 | |
75 | 0.97 | 0.87 | ||
80 | 0.89 | 0.86 | 0.88 | 1.12 |
85 | 0.79 | 0.84 | ||
90 | 0.70 | 0.85 | 0.74 | |
95 | 0.62 | |||
100 | 0.57 | 0.80 | 0.64 | |
105 | ||||
110 | 0.49 | 0.72 | ||
115 | ||||
120 | 0.44 | |||
125 | 0.54 | |||
130 | 0.39 | |||
135 | ||||
140 | 0.35 | 0.33 | 0.31 | |
145 | ||||
150 | 0.33 | |||
155 | ||||
160 | 0.56 | |||
165 | ||||
170 | ||||
175 | 0.24 | |||
180 | ||||
185 | ||||
190 | ||||
195 | ||||
200 | 0.25 | 0.43 | ||
205 | ||||
210 | ||||
215 | ||||
220 | ||||
225 | ||||
230 | ||||
235 | ||||
240 | ||||
245 | ||||
250 | 0.18 | 0.36 |
Hz | Absorption Coefficient |
80 | 1.12 |
100 | 0.64 |
125 | 0.54 |
160 | 0.56 |
200 | 0.43 |
250 | 0.36 |
315 | 0.45 |
400 | 0.31 |
500 | 0.21 |
630 | 0.20 |
800 | 0.24 |
1000 | 0.26 |
1250 | 0.26 |
1600 | 0.28 |
2000 | 0.32 |
2500 | 0.37 |
3150 | 0.41 |
4000 | 0.46 |