Voice Analysis & Comparison

Forensic Voice Analysis and Comparison

Voice identification is a highly specialized scientific discipline used to determine the identity of a speaker in a recorded message. Whether dealing with threatening voicemails, anonymous ransom calls, or recorded verbal contracts in corporate disputes, our laboratory provides conclusive, court-ready voice analysis.

Every human voice possesses unique physiological and acoustic characteristics, much like a fingerprint. Our experts utilize sophisticated spectrographic software to analyze these unique vocal traits.

How Voice Comparison Works

To perform a valid forensic comparison, we require a “questioned” recording (the unknown voice) and a “known” exemplar recording of the suspect. Our scientists conduct both aural (listening) and spectrographic (visual) analyses, measuring specific acoustic features:

• Pitch and Frequency: Analyzing the fundamental frequency of the vocal cords.
• Formants: Examining the resonant frequencies of the vocal tract (mouth, throat, and nasal cavities).
• Speech Patterns: Evaluating articulation, breathing patterns, dialect, and unique phonetic habits.

Court-Admissible Reporting

Our findings are compiled into a comprehensive, scientific report detailing the exact points of similarity or dissimilarity. Our forensic experts are fully qualified to present these findings and testify as expert witnesses in a court of law.