Therapy works for many people and even if you are considering surgery, you should know as much as possible about your starting point so you know what surgery will and won't give you. The trick to a low female sounding voice is inflection. That is the accent and larger frequency range a female voice covers. Most men when they go through puberty, their voice goes flat losing the excitement that is in a female voice. To a woman it come naturally but you can be trained to develop it and it can become your natural speaking style. Even if you have surgery, you need to have this or your voice will sound like a make with a very high pitched voice. One way to develop it is to allow the pitch to rise when you are speak in a louder voice. Softness and breathiness also contribute the the feminine feel of a voice. Mostly you need to start listing to women when they speak and pick the quality of their voice that you like and work on duplicating it.
