
I think this is similar to what I experience. I’ve always had a very small, very closed mouth, and pre T my voice was super high-pitched and closed off. Even though T did some work to lower my voice, without voice training it was still noticeably feminine. I need to actively work to make it sound masculine, and some days it works, but some days I just can’t reach that more masculine sound. My voice just locks up and suddenly can’t go as low and open as it needs to.