Joel here... I tend to simply ignore this, but...
First, could you show me where I told you "that video cards were the future of audio DSP" here or in my posts?
Also, could you show me the patent that uses bitwise autocorrelation? I'd gladly update my post if it is indeed bitwise autocorrelation. BTW, I am not using a single bit A/D. I take advantage of linear interpolation to accurately estimate the actual crossing. I am having good results.
Here's a quick sample of the results (I have more numbers if anyone is interested):
BACF Results:
82.410004 Error: 0.000077 cent(s).
Average Error: 0.000077 cent(s).
Min Error: 0.000077 cent(s).
Max Error: 0.000077 cent(s).
I have a comprehensive test suite with single-notes, fast picking, legato, bends, hammer-ons, with sound clips where the raw guitar audio is tracked by a synth: ( I'm sorry for posting a link, but I need to substantiate my defense: bit.ly/2So8Tq7 )
and more in the github project page that anyone can try.
Regards,
--Joel