Average several n-th octave spectra

[Timo1971]

I need to average the n-th octave spectra (3rd or 12th) from several (2 to 😎 microphones to get a spatial average of the spectrum in the room. Is there a function in Labview that does this or something in the S&V toolkit? Thanks!

[Jochen]

I don't think that there is an out-of-the-box solution for your task but if I understandd you correctly the only thing you will have to do is to average the power associated with each 1/n octave band of all your microphones. In the S&V toolkit the band power is an output parameter of e. g. the SVT Third-octave Analysis.vi. The band powers for each channel are stored within arrays so you will simply have to average the corresponding array elements from each of your channels.

Best regards,

Jochen Klier
National Instruments Germany