Some males are late bloomers and their voice may take a couple more years to change.
The voice you were born with - each of us has his/her "normal voice".
Bass.
All of them have changed except Eggman's voice actor.
Only males, not females.
Not very! Once a males voice has broken it is depends how low their voice is. Probably 50/50?
he's voice changed when started singing the really high notes or his voice changed like every boys voice changes when they get older.
androgens
Yes, a kindle has a option to read you the book in either a males voice or a females voice
he better have not
The most common voice classification for males is typically between baritone and tenor. Baritones have a lower male voice range, while tenors have a higher range suitable for singing melodies.
Im currently 7 months pregnant and since about my 4th or 5th month my voice has changed a lot. It's kind of annoying. I sound like I have a cold. When I try to speak out I always have to clear my troat first, and it is kinda low toned compared to what i sounded like before. I cant wait for my voice to get back to normal. I hope it will come back to normal!