How can I tell the different pitches of the voice samples in Sims 4?

There should be a slider under the symbols which impacts the pitch. If I'm remembering, the further right it is, the higher the pitch.

The symbols represent different vocal presets - I don't remember all of them, but I think they're sweet, lyrical, chirpy, ... okay I don't remember the bell at all... warm and brassy. Each preset also comes with a default pitch, I think. I honestly don't mess with the vocals much any more.