What's the best program structure for multi-channel Averaged FFTs?

[Mr. Good Vibes]

I have been successfully using a 8-channel FFT analyzer using a separate Averaged FFT Spectrum (Mag-Phase) VI for each channel, but I now need to expand my channel count from 8 to 16. All channels are simultaneoulsy read in to a buffer to maintain phase relatioships. Do I need to have 16 copies of the Averaged FFT Spectrum VI in my diagram to maintain the averages of each channel or can I utilize one FFT VI somehow within a For Loop? If a For Loop can be used, how can the averaged spectrums be maintained for each of the 16 channels?

[LBoltzmann]

You should be able to use a single FFT vi in a for loop. If your data is in a 2D array representation with each row representing a channel and you leave the indexing enabled you can pass your data array into the loop and it will strip off each row automatically. You could then pass each row of data to the FFT and pass the results out to the boundary of the for loop. This will then build an array containing the FFT results for each row (channel).

Marc

Marc