Admissibility of Spectrograms (Voice Prints)
A spectrograph transforms the energy used in the production of
a visual graph of acoustical energy. The spectrogram of an
is compared with that of an identified speaker in order to find
The majority of the courts which have considered the question have
voiceprint evidence is admissible. See United States v.
F.2d 348, 351 (7th Cir. 1989); United States v. Williams,
583 F.2d 1194
(2d Cir. 1978), cert. denied 439 U.S. 1117 (1979). Although
of Columbia Circuit has held that voice print evidence is
see United States v. Addison, 498 F.2d 741 (D.C. Cir.
continuing validity of that determination is questionable in view
of the Supreme
Court's subsequent decision addressing the admissibility of
in Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S.