Thanks Preston for your input. Actually, I have adequate resolutions in my FFT's bin The bin widths are 1/2 Hz wide so I can easily detect peaks that are 50 Hz apart and determine their Frequency & Amplitude.
The problem I am having is determining which group they belong. K-Means works by determining the distance from center frequency. I find center frequencies by averaging all the spectrums together and doing my peak detection on the averaged spectrum. The peaks detected in the averaged spectrum become my centers. I have also considered some means of determining the delta (ratio) to adjacent peaks. In my vi I calculate the frequency spacing between peaks. I am trying to come up with an intellegent way to use this spacing information.
