Convicted of bank robbery in violation of 18 U.S.C. § 2113, Robert Edward Jones complains that his fifth amendment right to be free from self-incrimination was violated when the district judge directed that he repeat words spoken by the bank robber so that a witness could identify him by means of his voice. We find no self-incrimination. The nature of the evidence was real or physical, not testimonial or communicative. Gilbert v. California, 388 U.S. 263, 266, 87 S.Ct. 1951, 18 L.Ed.2d 1178 (1967).

Affirmed.