If you want to compute a list of generation frequencies from 20 to 200 Hz, use the formula given in the standard:
f_x = 1000 * 10^(0.3*(2*x+1)/(2*6)) for x = -34..-15
1000 is reference frequency
10^0.3 is the base for IEC and ANSI fractional octave analysis
6 is the bandwidth designator
x is the band number
which produces a frequency at the exact center of each standard 1/6 octave band in the range.
Doug
Enthusiast for LabVIEW, DAQmx, and Sound and Vibration
