I have some low quality audio from my native tongue on a VHS. I am using this audio to dub HQ released of the same program (from another language source). The video frames/second ratio is 25:23.98 . I do not want to tamper with the fps ratio, since I am still using the other audio tracks as alternative languages in my video.
I can't notice a pitch difference from this conversion, I can only hear the pitch-changing VHS artefacts.
Is a 25/23.98 ratio enough to need pitch correction? What is the rule of thumb? Would the VHS artefacts hide the pitch difference (too much pitch-noise to actually matter) or would the average pitch difference drive an audiophile up the wall?