GIVEN:dB DIFFERENCE BETWEEN THE TWO LEVELS
FIND:dBs ADDED TO HIGHERLEVEL TO OBTAIN TOTAL LEVEL IN dBs
DIFF |
0.0 |
0.1 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
0.0 |
3.01 |
2.96 |
2.91 |
2.86 |
2.82 |
2.77 |
2.72 |
2.67 |
2.63 |
2.58 |
1.0 |
2.54 |
2.50 |
2.45 |
2.41 |
2.37 |
2.33 |
2.28 |
2.24 |
2.20 |
2.16 |
2.0 |
2.12 |
2.09 |
2.05 |
2.01 |
1.97 |
1.94 |
1.90 |
1.87 |
1.83 |
1.80 |
3.0 |
1.76 |
1.73 |
1.70 |
1.67 |
1.64 |
1.60 |
1.57 |
1.54 |
1.51 |
1.48 |
4.0 |
1.46 |
1.43 |
1.40 |
1.37 |
1.35 |
1.32 |
1.29 |
1.27 |
1.24 |
1.22 |
5.0 |
1.19 |
1.17 |
1.15 |
1.12 |
1.10 |
1.08 |
1.06 |
1.04 |
1.01 |
0.99 |
6.0 |
0.97 |
0.95 |
0.93 |
0.92 |
0.90 |
0.88 |
0.86 |
0.84 |
0.82 |
0.81 |
7.0 |
0.79 |
0.77 |
0.76 |
0.74 |
0.73 |
0.71 |
0.70 |
0.68 |
0.67 |
0.65 |
8.0 |
0.64 |
0.63 |
0.61 |
0.60 |
0.59 |
0.57 |
0.58 |
0.55 |
0.54 |
0.53 |
9.0 |
0.52 |
0.50 |
0.49 |
0.48 |
0.47 |
0.46 |
0.45 |
0.44 |
0.43 |
0.42 |
10.1 |
0.41 |
0.41 |
0.40 |
0.39 |
0.38 |
0.37 |
0.36 |
0.36 |
0.35 |
0.34 |
11.0 |
0.33 |
0.33 |
0.32 |
0.31 |
0.30 |
0.30 |
0.29 |
0.28 |
0.28 |
0.27 |
12.0 |
0.27 |
0.26 |
0.25 |
0.25 |
0.24 |
0.24 |
0.23 |
0.23 |
0.22 |
0.22 |
13.0 |
0.21 |
0.21 |
0.20 |
0.20 |
0.19 |
0.19 |
0.19 |
0.18 |
0.18 |
0.17 |
14.0 |
0.17 |
0.17 |
0.16 |
0.16 |
0.16 |
0.15 |
0.15 |
0.15 |
0.14 |
0.14 |
15.0 |
0.14 |
0.13 |
0.13 |
0.13 |
0.12 |
0.12 |
0.12 |
0.12 |
0.11 |
0.11 |
16.0 |
0.11 |
0.11 |
0.10 |
1.10 |
0.10 |
0.10 |
0.09 |
0.09 |
0.09 |
0.09 |
17.0 |
0.09 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.07 |
0.07 |
0.07 |
18.0 |
0.07 |
0.07 |
0.07 |
0.06 |
0.06 |
0.06 |
0.06 |
0.06 |
0.06 |
0.06 |
19.0 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.04 |
問:C/N1=52,C/N2=46.5,合併後C/NS=?
答:C/N1-C/N2=52-46.5=5.5 ,查上表相對之值為1.08
CTB/XMOD合併表
GIVEN:dB DIFFERENCE BETWEEN THE TWO LEVELS
FIND:dBs ADDED TO HIGHERLEVEL TO OBTAIN TOTAL LEVEL IN dBs
DIFF |
0.0 |
0.1 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
0.0 |
6.02 |
5.97 |
5.92 |
5.87 |
5.82 |
5.77 |
5.73 |
5.68 |
5.63 |
5.58 |
1.0 |
5.54 |
5.49 |
5.44 |
5.50 |
5.35 |
5.30 |
5.26 |
5.21 |
5.17 |
5.12 |
2.0 |
5.08 |
5.03 |
4.99 |
4.95 |
4.90 |
4.86 |
4.82 |
4.78 |
4.73 |
4.69 |
3.0 |
4.65 |
4.61 |
4.57 |
4.53 |
1.49 |
4.45 |
4.41 |
4.37 |
4.33 |
4.29 |
4.0 |
4.25 |
4.21 |
4.17 |
4.13 |
4.10 |
4.06 |
4.02 |
3.99 |
3.95 |
3.91 |
5.0 |
3.88 |
3.84 |
3.80 |
3.77 |
3.73 |
3.70 |
3.66 |
3.63 |
3.60 |
3.56 |
6.0 |
3.53 |
3.50 |
3.46 |
3.43 |
3.40 |
3.37 |
3.33 |
3.30 |
3.27 |
3.24 |
7.0 |
3.21 |
3.18 |
3.15 |
3.11 |
3.09 |
3.06 |
3.03 |
3.00 |
2.97 |
2.94 |
8.0 |
2.91 |
2.88 |
2.85 |
2.83 |
2.80 |
2.77 |
2.74 |
2.72 |
2.69 |
2.66 |
9.0 |
2.64 |
2.61 |
2.59 |
2.56 |
2.54 |
2.51 |
2.48 |
2.46 |
2.44 |
2.41 |
10.0 |
2.39 |
2.36 |
2.34 |
2.32 |
2.29 |
2.27 |
2.25 |
2.22 |
2.20 |
2.18 |
11.0 |
2.16 |
2.14 |
2.11 |
2.09 |
2.07 |
2.05 |
2.03 |
2.01 |
1.99 |
1.97 |
12.0 |
1.95 |
1.93 |
1.91 |
1.89 |
1.87 |
1.85 |
1.83 |
1.81 |
1.79 |
1.77 |
13.0 |
1.76 |
1.74 |
1.72 |
1.70 |
1.68 |
1.67 |
1.65 |
1.63 |
1.61 |
1.60 |
14.0 |
1.58 |
1.56 |
1.55 |
1.53 |
1.52 |
1.50 |
1.48 |
1.47 |
1.45 |
1.44 |
15.0 |
1.42 |
1.41 |
1.39 |
1.38 |
1.36 |
1.35 |
1.33 |
1.32 |
1.31 |
1.29 |
16.0 |
1.29 |
1.26 |
1.25 |
1.24 |
1.22 |
1.21 |
1.20 |
1.19 |
1.17 |
1.16 |
17.0 |
1.15 |
1.14 |
1.12 |
1.11 |
1.10 |
1.09 |
1.08 |
1.06 |
1.05 |
1.04 |
18.0 |
1.03 |
1.02 |
1.01 |
1.00 |
0.99 |
0.98 |
0.97 |
0.95 |
0.94 |
0.93 |
19.0 |
0.92 |
0.91 |
0.90 |
0.89 |
0.88 |
0.88 |
0.87 |
0.86 |
0.85 |
0.84 |
20.0 |
0.83 |
0.82 |
0.81 |
0.80 |
0.79 |
0.78 |
0.78 |
0.77 |
0.76 |
0.75 |
21.0 |
0.74 |
0.73 |
0.73 |
0.72 |
0.71 |
0.70 |
0.69 |
0.69 |
0.68 |
0.67 |
22.0 |
0.66 |
0.66 |
0.65 |
0.64 |
0.64 |
0.63 |
0.62 |
0.61 |
0.61 |
0.60 |
23.0 |
0.59 |
0.59 |
0.58 |
0.58 |
0.57 |
0.56 |
0.56 |
0.55 |
0.54 |
0.54 |
24.0 |
0.53 |
0.53 |
0.52 |
0.51 |
0.51 |
0.45 |
0.50 |
0.49 |
0.49 |
0.48 |
25.0 |
0.48 |
0.47 |
0.47 |
0.46 |
0.45 |
0.40 |
0.44 |
0.44 |
0.43 |
0.43 |
26.0 |
0.43 |
0.42 |
0.42 |
0.41 |
0.41 |
0.38 |
0.40 |
0.39 |
0.39 |
0.38 |
27.0 |
0.38 |
0.38 |
0.37 |
0.37 |
0.36 |
0.32 |
0.36 |
0.35 |
0.35 |
0.34 |
28.0 |
0.34 |
0.34 |
0.33 |
0.33 |
0.32 |
0.29 |
0.32 |
0.31 |
0.31 |
0.31 |
29.0 |
0.30 |
0.30 |
0.30 |
0.29 |
0.29 |
0.28 |
0.28 |
0.28 |
0.28 |
0.27 |
30.0 |
0.27 |
0.27 |
0.26 |
0.26 |
0.26 |
0.23 |
0.25 |
0.25 |
0.25 |
0.24 |
31.0 |
0.24 |
0.24 |
0.24 |
0.23 |
0.23 |
0.20 |
0.23 |
0.22 |
0.22 |
0.22 |
32.0 |
0.22 |
0.21 |
0.21 |
0.21 |
0.21 |
0.18 |
0.20 |
0.20 |
0.20 |
0.20 |
33.0 |
0.19 |
0.19 |
0.19 |
0.19 |
0.18 |
0.16 |
0.18 |
0.18 |
0.18 |
0.17 |
34.0 |
0.17 |
0.17 |
0.17 |
0.17 |
0.16 |
0.16 |
0.16 |
0.16 |
0.16 |
0.16 |
35.0 |
0.15 |
0.15 |
0.15 |
0.15 |
0.15 |
0.14 |
0.14 |
0.14 |
0.14 |
0.14 |
36.0 |
0.14 |
0.14 |
0.13 |
0.13 |
0.13 |
0.13 |
0.13 |
0.13 |
0.13 |
0.12 |
37.0 |
0.12 |
0.12 |
0.12 |
0.12 |
0.12 |
0.11 |
0.11 |
0.11 |
0.11 |
0.11 |
38.0 |
0.11 |
0.11 |
0.11 |
0.11 |
0.1. |
0.10 |
0.10 |
0.10 |
0.10 |
0.10 |
39.0 |
0.10 |
0.10 |
0.10 |
0.09 |
0.09 |
0.09 |
0.09 |
0.09 |
0.09 |
0.09 |
問:CTB1=65,CTB2=56.4,合併後CTBS=?
答: CTB1-CTB2=65-56.4=8.6查上表香對之值-2.74
CTBS=56.4-2.74=53.66