I have a headcanon that Alastor kind of hates Vox’s voice because Alastor’s voice uses analog sound waves (whose waves’ crest differentiate from the equilibrium), and Vox’s voice uses digital sound waves (whose waves’ crests are set in a 1-0 format, aka strictly one or the other), and the difference is very distinct and very irritating to Alastor.

Example of each I found on Google:

And for me to nerd out:

This is why a pitch perfect studio recording on Spotify can never beat watching a band play live (besides the obvious seeing your favorite artists in real life). The amplitude and length between the crest and trough (which I don’t think is exactly the wavelength) change ever so slightly between each wave.

I think many vinyl records (and probably… wax cylinders? Point point nudge nudge 👀?) have this same quality. The recording goes directly into a needle that marks waves on the record which make for better sound.