-----Original Message-----
From: mgraffam@mhv.net
Does anyone know of any papers, articles or whatever on good techniques to remove bias from the audio source?
My initial thoughts are along the lines of just hashing everything, but this will be slow, and I'd like to see what other ideas are out there.
What about an analog filter placed before the digitizer? Nowadays there should be inexpensive single-chip implementations of multiple-tap equalizers made for consumer audio. You just have to straighten up the amplitude ignoring the phase rotation, because the power spectrum is a real-codomain function (being the Fourier Transform of the autocorrelation, which is an even function). It won't be perfect, but it'll help. Enzo