User's Manual

HVM200 Manual Frequency Weighting Curves A-9
Fc (Flat 6.3 Hz to 1260 Hz), Wh, and Wf Frequency Weighting.
Freq ( Hz)
Nominal
Freq ( Hz)
True
Fc dB Wh dB Tolerance
dB
Wf dB Tolerance
dB
0.800 0.7943 -36.00 -36.00 +2 / - -76.00 +4 / -
1.00 1.000 -32.00 -31.99 +2 / - -68.00 +4 / -
1.25 1.259 -28.01 -27.99 +2 / - -60.00 +4 / -
1.60 1.585 -24.02 -23.99 +2 / - -52.00 +4 / -
2.00 1.995 -20.04 -20.01 +2 / - -44.00 +4 / -
2.50 2.512 -16.11 -16.05 +2 / - -36.00 +4 / -4
3.15 3.162 -12.27 -12.18 +2 /
- -28.00 +4 / -4
4.00 3.981 -8.64 -8.51 +2 / -2 -19.90 +4 / -4
5.00 5.012 -5.46 -5.27 +2 / -2 -12.20 +4 / -4
6.30 6.310 -3.01 -2.77 +2 / -2 -5.30 +4 / -4
8.00 7.943 -1.46 -1.18 +2 / -2 -1.50 +4 / -4
10.0 10.00 -0.64 -0.43 +1 / -1 0.00 +1 / -2
12.5 12.59 -.027 -0.38 +1 / -1 0.00 +1 / -2
16.0 15.85 -0.11 -0.96 +1 / -1 0.00 +1 / -2
20.0 19.95 -0.04 -2.14 +1 / -1 0.00 +1 / -1
25.0 25.12 -0.02 -3.78 +1 / -1 0.00 +1 / -1
31.5 31.62 -0.01 -5.69 +1 / -1 0.00 +1 / -1
40.0 39.81 0.00 -7.72 +1 / -1 0.00 +1 / -1
50.0 50.12 0.00 -9.78 +1 / -1 0.00 +1 / -1
63.0 63.10 0.00 -11.83 +1 / -1 0.00 +1 / -1
80.0 79.43 0.00 -13.88 0 0.00 0
100 100.0 0.00 -15.91 +1 / -1 0.00 +1 / -1
125 125.9 0.00 -17.93 +1 / -1 0.00 +1 / -1
160 158.5 0.00 -19.94 +1 / -1 0.00 +1 / -1
200 199.5 0.00 -21.95 +1 / -1 0.00 +1 / -1