532, 18 Sun. Ct. 183, 42 L. Ed. 568. voluntary confession is one made spontaneously by a person accused of crime, free from the influence of any extraneous disturbing cause, and in particular, not influenced, or extorted by violence, threats, or proines: State v. Clifford, . W. 299, 41 Am. St. ep Roesel v. State, 62 N. J. Law, 216.