Formula for calculating the total sound level
Frequency f [Hz]
31.5
63
125
250
500
1,000
2,000
4,000
8,000
16,000
∑
dB(A)
–39.4
–26.2
–16.1
–8.6
–3.2
0
1.2
1
–1.1
–6.6
dB(C)
–3
–0.8
–0.2
–8.5
dB
120.5
69.8
86.5
102.1
103.6
97.4
97.3
84.3
68.7
62.6
53.4
107.1
106.2
111.9
118
112.2
100.6
82.9
66.9
60.7
51.5
120.0
