My sudden transformation is due entirely to the new found confidence I discovered, when I got my new deep, crisp voice. Since I discovered how to control the environment in my vocal chords, I have literally had complete power over how I sound. This power has manifested beyond just how I sound. I suddenly felt the need to dress better, take care of my body and a whole bunch of stuff has changed, to reflect this new mastery over my inflection and speech. The bottom line, is anyone can have a deep, dynamic, powerful speaking voice. It's not genetics, because vocal chord size is not responsible for a powerful voice and everybody has the same size. There is variation, but not to the point where it is responsible for a weak squeaky voice.