Collapsed audio input to mono for full analysis (stereo will only be used
to determine sound location)
Added two pitchtracking methods in parallel
Added several spectral analysis parameters (autocorr, centroid, spread,
skewness, kurtosis, flatness, crest, flux)
Added epoch filtering, should indicate voiced or unvoiced speech. Also
adds yet another pitch tracking metod via epoch zero crossing count.
The new parameters are brought into IO.py and appended to mic input