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Part 3: Acoustics |
dB(A)
Sound Levels in decibels and Sound Power in W/m2 |
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Level dB(A) | Power W/m2 | Level dB(A) | Power W/m2 | Level dB(A) | Power W/m2 | |||
0 | 1.000*10-12 | 55 | 3.162*10-7 | 83 | 1.995*10-4 | |||
10 | 1.000*10-11 | 56 | 3.981*10-7 | 84 | 2.512*10-4 | |||
20 | 1.000*10-10 | 57 | 5.012*10-7 | 85 | 3.162*10-4 | |||
30 | 1.000*10-9 | 58 | 6.310*10-7 | 86 | 3.981*10-4 | |||
31 | 1.259*10-9 | 59 | 7.943*10-7 | 87 | 5.012*10-4 | |||
32 | 1.585*10-9 | 60 | 1.000*10-6 | 88 | 6.310*10-4 | |||
33 | 1.995*10-9 | 61 | 1.259*10-6 | 89 | 7.943*10-4 | |||
34 | 2.512*10-9 | 62 | 1.585*10-6 | 90 | 1.000*10-3 | |||
35 | 3.162*10-9 | 63 | 1.995*10-6 | 91 | 1.259*10-3 | |||
36 | 3.981*10-9 | 64 | 2.512*10-6 | 92 | 1.585*10-3 | |||
37 | 5.012*10-9 | 65 | 3.162*10-6 | 93 | 1.995*10-3 | |||
38 | 6.310*10-9 | 66 | 3.981*10-6 | 94 | 2.512*10-3 | |||
39 | 7.943*10-9 | 67 | 5.012*10-6 | 95 | 3.162*10-3 | |||
40 | 1.000*10-8 | 68 | 6.310*10-6 | 96 | 3.981*10-3 | |||
41 | 1.259*10-8 | 69 | 7.943*10-6 | 97 | 5.012*10-3 | |||
42 | 1.585*10-8 | 70 | 1.000*10-5 | 98 | 6.310*10-3 | |||
43 | 1.995*10-8 | 71 | 1.259*10-5 | 99 | 7.943*10-3 | |||
44 | 2.512*10-8 | 72 | 1.585*10-5 | 100 | 1.000*10-2 | |||
45 | 3.162*10-8 | 73 | 1.995*10-5 | 101 | 1.259*10-2 | |||
46 | 3.981*10-8 | 74 | 2.512*10-5 | 102 | 1.585*10-2 | |||
47 | 5.012*10-8 | 75 | 3.162*10-5 | 103 | 1.995*10-2 | |||
48 | 6.310*10-8 | 76 | 3.981*10-5 | 104 | 2.512*10-2 | |||
49 | 7.943*10-8 | 77 | 5.012*10-5 | 105 | 3.162*10-2 | |||
50 | 1.000*10-7 | 78 | 6.310*10-5 | 106 | 3.981*10-2 | |||
51 | 1.259*10-7 | 79 | 7.943*10-5 | 107 | 5.012*10-2 | |||
52 | 1.585*10-7 | 80 | 1.000*10-4 | 108 | 6.310*10-2 | |||
53 | 1.995*10-7 | 81 | 1.259*10-4 | 109 | 7.943*10-2 | |||
54 | 2.512*10-7 | 82 | 1.585*10-4 | 110 | 1.000*10-1 | |||
To understand the table above, read the pages starting with
Sound from Wind Turbines
in the Guided Tour. If you wish to know about designing wind
turbines for quiet operation, read the pages on turbine
design in the Guided Tour. |
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© Copyright 1999 Soren Krohn Updated 27 September 2000 http://www.windpower.org/stat/unitssnd.htm |