[PD] autotune / pitch correction

[mark edward grimm]

hello list,

i am just wondering it anyone has implemented an
'autotune' / pitch correction type patch in PD for
audio input - not unlike the antares autotune
hardware/plugs....

...and if so, if they would not mind sharing an
example?

it would be:

- fiddle~ to recognize audio pitch (to the best of its
ability)

- check it against a 'scales' database (the 'scales'
sub-patches in 'xyZee' come to mind off the top of my
head.

- use pitch shifting to shift audio input to closest
note on chosen scale.

...for simplicity's sake am i correct in the basics?

i could give it a shot myself but examples would be
killer!!!

Thanks
mark