Audio Enhancement Expert Witnesses

San Francisco, California

Acoustics, Video - Audibility, Audio Technology, Patent & copyright (audio), Musicology, Acoustic measurement, Digital Authentication, Video enhancement, Forensic Musicology, Warning Signals, Audio enhancement, Rebuttal, Accident analysis: audibility, Speech Intelligibility, body worn camera videos, Audio Forensics

Expert consultant in the areas of acoustics; video and audio evidence recordings; audio patent infringement analysis; acoustic measurement; speech intelligibility and warning signal audibility; human factors and psychoacoustics; musicology and copyright infringement; voice comparison; and recorded gunshot analysis. Authentication, speech enhancement, signal identification and analysis of audio-video recordings in legal cases. Body worn camera, dash cam, security camera, cell phone analysis. Research scientist, psychoacoustics, NASA 1988-2025; Consultant; Salter Associates, 1996-current. Consultation in over 1000 audio-video and acoustic forensic cases since 1987. Expert testimony in over 100 cases in court or depositions, in U.S. Federal and State courts including the United States International Trade Commission (USITC), and courts in Canada and International arbitration panels (World Bank-ICSID).

Providence, Rhode Island

Audio, Digital Forensics - Bodycam Audio, Dashcam Audio, 911 Call Audio, Gunshot Timing, Assault Audio, Surveillance Audio, Interrogation Audio, Jail Audio, Audio Analysis, Speech Clarification, Sound Comparison, Police Audio, Audio Tampering, Noise Reduction, Threat Recording, Workplace Audio, Accident Audio, Audio Provenance, Audio Enhancement, Insurance Audio

Mark Scetta is an independent forensic audio examiner providing audio clarification, enhancement, and authentication for criminal defense, civil litigation, and investigative matters. Over 20 years of professional audio engineering experience in film and broadcast post-production, dialogue restoration, noise reduction, sound recording, audio mastering for broadcast, audio electronics, studio acoustics, and corporate media production forms the technical foundation for evaluating audio evidence in legal disputes. Common case scenarios include bodycam recordings where speech is unintelligible, dashcam footage with contested statements, 911 calls obscured by background noise or emotional distress, surveillance audio from buses or workplaces, jail telephone calls requiring clarity on specific phrases, interrogation recordings with questions about timing or edits, gunshot sequences across multiple video sources, voice comparisons between questioned recordings and known exemplars, and cel...

Brentwood, Tennessee

Video, Audio - video forensics, video enhancement, video analysis, forensic video, audio forensics, audio enhancement, audio analysis, forensic audio, voice forensics, voice enhancement, image forensics, image enhancement

Principle Forensics is a national media forensics laboratory. We recover, authenticate, enhance, and analyze all types of recorded evidence, including video, audio, and digital images. And we back all our work with experienced, highly trained, expert testimony. Nick Barreiro, BAC, AVFA, DIVRT, is a certified Audio Video Forensic Analyst and the founder of Principle Forensics.  He is an FBI-trained member of the Digital Imaging and Video Recovery Team.  Mr. Barreiro works with attorneys representing plaintiffs and defendants in civil or criminal matters in which audio, video, or image evidence plays a key role.  He has extensive experience on the witness stand and has enhanced and analyzed digital media from simple slip-and-fall cases and minor traffic accidents to complex investigations such as homicides and officer-involved shootings.  He has testified 100s of times in criminal cases, civil cases, arbitrations, and depositions. Mr. Barreiro holds a bachelor’s degree in Communic...