#FFT
#SPL Free Field 0 degree response of Realistic Sound Level Meter in dB
#Guesses based partly on manual and measured results
20      0
2400    0
3000    0.7
3600    2.0
4000    1.0
4300    0.7
5200    1.3
6000    5.5
6500    6.0
7000    6.5
8000    5.5
9000    4.5
10000   4.0
12300   -2.5
13000   -4.5
16500   -7.0
20000   -9.0