HT instruments HT157 - Manual (Page 66)

HT155 - HT157
EN - 64
12.3. APPENDIX 3 – FREQUENCY WEIGHTING A, C
Frequency [Hz] A [dB] C [dB] Frequency [Hz] A [dB] C [dB]
10 -70.4 -14.3 500 -3.2 0
12.5 -63.4 -11.2 630 -1.9 0
16 -56.7 -8.5 800 -0.8 0
20 -50.5 -6.2 1000 0 0
25 -44.7 -4.4 1250 0.6 0
31.5 -39.4 -3.0 1600 1.0 -0.1
40 -34.6 -2.0 2000 1.2 -0.2
50 -30.2 -1.3 2500 1.3 -0.3
63 -26.2 -0.8 3150 1.2 -0.5
80 -22.5 -0.5 4000 1.0 -0.8
100 -19.1 -0.3 5000 0.5 -1.3
125 -16.1 -0.2 6300 -0.1 -2.0
160 -13.4 -0.1 8000 -1.1 -3.0
200 -10.9 0 10000 -2.5 -4.4
250 -8.6 0 12500 -4.3 -6.2
315 -6.6 0 16000 -6.6 -8.5
400 -4.8 0 20000 -9.3 -11.2