I was also talking about inner voice as in the one in our heads when we talk to ourselves internally, ie our thoughts. Not the voice we hear ourselves when we speak, which is different to us than other people hear (and why we are typically surprised when we hear ourselves recorded as its not how we sound to ourselves)
I see no reason at all why the thought voice would change, there is nothing physically influencing it so the presence of another hormone should have no impact upon it. Voice we hear ourselves likely will as there is a physical change happening. I noticed it myself just talking its much lower than it was and thats not hearing a recording I just hear it myself. Maybe Im more conscious of listening to my voice than others though so I do notice it and not just not hear it cause I know what Im saying. I still hear it and am conscious of it. It likely doesnt align with the thought voice either though and I have no idea if that even can change or be influenced upon. Has made me think about it though. What actually is the head voice, will it always stay the same or can it be altered.. I really have no idea. Doesnt seem like it will change though, at least not noticably so. Sure mine is exactly the same while my physical voice has dropped an octave. Its higher than my spoken voice now is but its not high either, still more on the male spectrum to me but maybe just kinda neutral. I dont know. Its not something we can measure, like physically we can prove a voice change has occured. Even if it does slightly change internally it will be so gradual its likely we would think it was still the same even if it was a bit different. Cant definitively say, its hard to really tell, but logically speaking I see no reason why it would change unless its sort of fluid to perspective like we see ourselves more male so it kind of alters to account for that. Still dont think it will really change though, it would depend on what it is the product of and if its possible for it to vary