Voice Spectrography Law and Legal Definition

Under certain jurisdictions, voice spectrography techniques are not generally accepted to render test results that are admissible in criminal prosecutions. However, under other authority, voice spectrography techniques are found to be admissible. For example, in United States v. Smith, 869 F.2d 348 (7th Cir. Ill. 1989), the court observed that expert testimony concerning spectrographic voice analysis is admissible in cases where the proponent of this testimony has established a proper foundation.