Killer on the Line: How Voice Analysis Helps Solve Crimes
By Dr.Lorra Corrales Introduction You can disguise your face. You can hide your name. But your voice? It betrays you. In the digital age, voices have become critical forensic evidence—captured in threatening calls, ransom demands, deepfakes, and anonymous tips. Through voice analysis, investigators now identify criminals by the sounds they make. Welcome to forensic phonetics and voice biometrics—where science listens, and the voice becomes a weapon of truth. 1. What Is Forensic Voice Analysis? Forensic voice analysis is the study of recorded speech to: Identify a speaker Verify authenticity Spot deception Analyze threats or intent It’s not just about what someone says—it’s how they say it. Tone, pitch, accent, rhythm, pauses—every voice is as unique as a fingerprint. 2. How It Works Voice analysts use: Spectrograms: visual soundwaves showing pitch and intensity Acoustic analysis: measuring vibrations, speed, and frequency Phonetic breakdowns: identifying speech patterns, dialects...
