Man, I’m so glad I’m not the only one who has discovered this about the low pitch voice. My natural voice is very brittle, not girly but not masculine enough. I trained my vocal chords to always speak with a “morning voice” tone. Now, it all comes very naturally to me. Although my brittle voice comes back sometimes and I can’t help it and those are times that I have talked for like an hour and I’m mentally tired. I sound like superman sometimes!! I trained myself by reading some high level texts aloud and making that fake low pitch voice. For example, reading some historic or biblical texts which has lots of big words with a British accent and my special voice !!! I used to have a very bad stuttering but I am over 95% fluent now. Just some subtle impediments every now and then which is noticed by others sadly. I guess a lot of it had to do with age that made stuttering go away. I’m not sure though.