Might be worth mentioning for people who want an example: Look up “fundie baby voice”. Everyone’s voice has an aspect of socialization, but there’s a big difference between a natural-sounding feminine speaking voice and the way that many evangelical women are socialized into speaking. It’s a form of social control that limits the range of emotional expression. And like most extremist Christian norms, there are softer versions of these expectations which are much more widespread in western societies.