That depends, I might be losing the higher pitches tbh, but I noticed our stovetop responds differently to different pans/pots and to different loads. It's noisier when a pan is misaligned, and it starts making more noises when all the "burners" are in use, and so I also imagine different models will also act somewhat differently.

What high pitch squeal lol? Worst over heard is a buzzing that is very much not high pitched and lasts until the pan heats up so like 60 seconds tops.