I made a vlog for myself, and I noticed when I get into "theory mode" I use waaaay more feminine voice cues. And it offsets a lot of my voice deepening from T. I can see some people reading it as a female voice, especially when I am say, teaching because again I use my "theory mode" voice.
So yeah. I need to do some work on it. Problem is, I don't know where to start. I get less forceful in my speech when I am "thinking", because I am posing questions - so I have that "questioning" inflection that is associated with women's voices. That would probably be the best place to start. I could do that in my classes by preparing far enough in advance that I say things as if they are being asked more authoritatively. Chances are that would solve the lack of monotone too, because I only really raise my voice when I am questioning.
And those goddamn S's.