[sdiy] Pitch-to-voltage converters

[David G. Dixon]

Hey Team!  I'm planning to build a pitch-to-voltage converter, and I'm
looking at Harry Bissell's EFM design (very clever!).  I was just wondering
whether anyone had built one, what your impressions were, what kind of
signal preprocessing/filtering you might have experimented with, and whether
there might be any design improvements of which I should be aware.  Please
feel free to respond offline.