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Forensic Tape & Analog Media Services
Unlocking Decades-Old Truths
In cold cases and post-conviction appeals, pivotal evidence is often stored on aging analog media. When the original recording exists solely on physical magnetic tape, conventional playback can risk permanent degradation—or fail to capture critical acoustic nuances altogether. Sound Testimony specializes in forensic recovery, high-resolution digitization, and technical analysis of physical tape formats to uncover facts buried by time.
All calls with Sound Testimony® are confidential — your privacy comes first.
Supported Analog Formats
Our lab is equipped with calibrated, studio-grade legacy decks and specialized head assemblies to safely handle physical media, including:
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Reel-to-Reel Tape
3″ to 10.5″ reels, with support for multiple track and head configurations.
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Standard Audio Cassettes
Compact Cassette format, including damaged, warped, or degraded shells and reels.
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Micro & Mini-Cassettes
Commonly used in legacy dictation machines, answering machines, and law enforcement recorders.
Our Forensic Tape Recovery Process
From physical inspection to court-ready authentication, every step is designed to preserve the integrity of the original evidence.
High-Resolution Archival Preservation
Physical tape deteriorates through binder breakdown, magnetic bleed-through, and physical warping. Before any processing occurs, we perform structural inspection and, when necessary, physical restoration. We capture the raw audio signal at high-resolution sample rates (up to 24-bit/192kHz) to ensure maximum dynamic range without altering the underlying physical evidence.
Signal Enhancement & Spectral Analysis
Once safely digitized, advanced spectral audio processing isolates quiet background voices, eliminates continuous line hum, reduces tape hiss, and mitigates ambient noise. Details once hidden beneath acoustic degradation become audible and intelligible.
Authentication & Tamper Detection
Analog recordings carry unique physical footprints. Through physical track-width inspection, magnetic strip analysis, and transient signal profiling, we examine tapes for indications of editing, splicing, or over-recording—providing court-ready authentication reports.
A Critical Asset for Legal Teams & Investigators
Whether re-evaluating decade-old police interviews, wiretaps, or room recordings, high-resolution forensic conversion turns overlooked magnetic tape into clear, actionable, and legally admissible evidence. Contact our laboratory to discuss safe physical transport and technical evaluation of your case.
Sound Testimony®
We offer Forensic Audio Services to a wide range of clients. Whether you are a legal professional or a private individual, we’re here to help you.
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