Zero Centering Audio for Forward FFT I'm trying to work out the best way to zero centre an audio clip for a forward FFT.   I've been trying rotate my audio so that a peak exists mid way (N/2).   This seam a little naive and I thought I had read that you can zero pad the centre of the audio clip in order to achieve the same result.  Am I mad?  what is the best way to zero centre an audio clip for Forward FFT
Eureka! You can get a zero centered waveform of an audio clip by applying a window, i used hann (cosine) window and then inverting the left and right sides.