Mark Scetta is an independent forensic audio examiner providing audio clarification, enhancement, authentication, and sound comparison for criminal defense, civil litigation, and investigative matters. Professional audio engineering since 2001 — film and broadcast post-production, dialogue restoration, noise reduction, sound recording, mastering for broadcast, audio electronics, studio acoustics, and corporate media production — forms the technical foundation for evaluating audio evidence; forensic practice since 2021.

Common case scenarios include bodycam recordings where speech is unintelligible, dashcam footage with contested statements, 911 calls obscured by background noise, surveillance audio from buses and workplaces, jail telephone calls requiring clarity on specific phrases, interrogation recordings with questions about timing or edits, and recordings with disputed authenticity.

When audio is unclear, edited, or challenged, the analysis involves professional noise reduction, spectral editing, and dialogue processing to improve the intelligibility of contested speech, environmental context, and background conversations. When a recording's integrity is in question, the examination includes metadata verification, file structure analysis, encoder history review, and detection of gaps, splices, re-exports, or timestamp inconsistencies. Sound comparison between questioned recordings and known exemplars is offered as a qualitative opinion — whether the observable acoustic evidence supports, does not support, or is inconclusive as to common origin.

Retained in criminal defense matters including police use-of-force investigations, assault cases with hate-crime allegations, and homicide depositions. Retained in civil matters including personal injury bus surveillance, municipal police-shooting investigations, and independent sound comparison engagements. Prepares forensic reports and rebuttal analyses for state and federal court proceedings, referencing the published guidance of the Scientific Working Group on Digital Evidence (SWGDE) and employing structured documentation, contemporaneous logging, and chain-of-custody protocols built to withstand scrutiny under Daubert and Frye.

Before forensic work, did audio post-production and mastering in the broadcast entertainment industry. Designed reference-grade monitoring environments and studio acoustics for small professional audio facilities. Serviced and built tube and solid-state audio electronics. Taught advanced media production as Adjunct Faculty at New England Institute of Technology. Authored Gardner's Guide to Audio Post-Production, a 300-page technical reference on applied sound engineering. Professional audio clients included The Food Network, NCAA, Yahoo! and national corporate campaigns requiring broadcast-grade audio quality.

Member of ASTM International (Committee E30, Forensic Sciences), the High Technology Crime Investigation Association (HTCIA), and the Audio Engineering Society (AES). Government-registered vendor. Completed SEAK expert witness training (2025). FCC-licensed amateur radio operator. B.A. in Film Studies from Rhode Island College.

Available for criminal defense, plaintiff and defense civil litigation, insurance investigations, and private consultations in all jurisdictions.

Report Writing & Rebuttal Experience | Criminal & Civil Matters | Plaintiff and Defense

Contact: 401.753.3775 | Mark@StellarAudioForensics.com