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Table A-1. Exact Center Frequencies for 1/12 Octave Analysis
k
(1/12
ANSI-Standard Exact
octave)
Center Frequencies (Hz)
–90
–89
–88
–87
–86
–85
–84
–83
–82
–81
–80
–79
–78
–77
–76
–75
–74
–73
–72
–71
–70
–69
–68
–67
A-11
5.52
5.85
6.20
6.57
6.96
7.37
7.81
8.28
8.77
9.29
9.84
10.43
11.05
11.71
12.40
13.14
13.92
14.75
15.625
16.554
17.538
18.581
19.686
20.857
Appendix A
Common Questions
IEC-Standard Exact
Center Frequencies (Hz)
5.69
6.02
6.38
6.76
7.16
7.59
8.04
8.52
9.03
9.56
10.13
10.73
11.37
12.05
12.76
13.52
14.33
15.18
16.083
17.039
18.052
19.126
20.263
21.468
NI-DSA Software User Manual
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