Yes congenital muteness does exist.
The voice you were born with - each of us has his/her "normal voice".
Eric Voice was born on 1924-06-02.
Sumie Sakai - voice actress - was born in 1945.
Naoko Watanabe - voice actress - was born in 1959.
Kevin Miller - voice actor - was born in 1977.
Eddie Eagle - voice actor - was born in 1957.
Satoko Yamano - voice actress - was born in 1963.
Mai Goto - voice actress - was born in 1982.
Jack Curtis - voice actor - was born in 1926.
Brendan O'Brien - voice actor - was born in 1962.
Joan Gardner - voice specialist - was born in 1926.
Jun Konno - voice actor - was born in 1975.