Apply FFT to a both channels of a stereo signal separately?

Question

I\'m reading a wave-file and would like to apply the fast fourier transformation to it. However I\'ve got a stereo signal and I\'m wondering what to do with the left and rig

Answer 1

Since stereo channels are independent you need to apply the FFT to each channel. If you want only to process a single channel you would need to convert both stereo channels into a mono channel.