hia I'm brand new to PD and i was wondering if it was at all possible to make PD take audio coming in and convert that frequency to its corresponding MIDI note? Any info on this would be greatly appreciated!

I'll let someone else chime in with specific Pd patch examples, but the central objects to any patch that does this would be the [ftom] (control) and [ftom~] (DSP audio signal) objects. You can read the Pd help files on those to give yourself a head-start.

@reggiearthur look at the documentation of [sigmund~] and [fiddle~].

Cheers~

Check this, too:

https://forum.pdpatchrepo.info/topic/5235/fiddle-signal-to-midi-better-way-to-generate-midi-note-durations