[PD] "instantaneous" pitch follower

[Simon Iten]

hi list,

i found a way to get the pitch from a signal without any analyzing. it's a
side effect of a gr-300 patch i've worked on in my spare time.
maybe this is very obvious but for me this is great!! also note that i'm a
musician, so sorry for any mistakes.
it tracks with almost no latency and outputs pitch continuously. it all
happens in the signal domain. if the pitch changes the follower ramps to
the new pitch. so if you play fast notes you get some "smearing". sounds
worse than it is (aka sounds) to my ears :-)
this works great on my double-bass and i just wanted to share. it's very
simple and far from perfect. try it out and let me know!

simon
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