Appellant was convicted of a violation of the Bomb Threats Act, 18 U.S.C. § 844(e) (1970). The question presented on appeal relates to the admission in evidence of pretrial voice identification of appellant from a single recording. Appellant argues that the pretrial identification was impermissibly suggestive under Stovall v. Denno, 388 U.S. 293, 87 S. Ct. 1967, 18 L.Ed.2d 1199 (1967), and therefore inadmissible in evidence.

It may well be that the circumstances surrounding identification by voice can be as suggestive as similar circumstances with respect to visual identification of a person or his photograph. The question is whether the same factors of suggestion discussed in Stovall, supra, 388 U.S. at 301-302, 87 S.Ct. 1967, apply equally to identification made by the ear and by the eye.

Assuming the principles announced in Stovall do apply to pretrial voice identification, the conviction here must still be affirmed because we find that, in the circumstances of this case, any error in the admission of the pretrial identification evidence here is harmless under Chapman v. California, 386 U.S. 18, 87 S.Ct. 824, 17 L.Ed.2d 705 (1967).

Affirmed.