average of energy per octave

[anubisxl]

Hi there,

I want to calculate the average of energy per octave band (my data are energy levels per octave bands of different time slices I want to get the average of several time slices), the problem is:

levels:
e.g.
5 12 13 14 15 13 5
av=11.00000 =10.41db

levels in db:
6.99 10.79 11.14 11.46 11.76 11.14 6.99
average=10.038db

so what's the correct way to do that?

 

[Strong]

Convert each dB value into voltage or engineering units depending upon the dB-Reference. Then do a math average (sum of values divided by the #values). Then convert the math average back into dB units.

Walt