Detecting Edits, Tampering & Anomalies
We analyze waveforms, spectrograms, metadata, and timing continuity to identify edits, insertions, deletions, or manipulation. If a recording has been altered, we determine what was done and where it occurred.
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Forensic Audio Authentication
When the authenticity of a recording is questioned, the truth must be verifiable. Sound Testimony® uses established forensic protocols and advanced analysis to determine whether your audio is a reliable representation of the events it claims to document.
Verifying Integrity & Provenance
Every recording must demonstrate provable authenticity. We review device behavior, file structure, metadata consistency, and recording-chain continuity to confirm integrity or identify concerns.
Clarifying Disputed or Missing Audio
Voicemails, pocket dials, and private recordings often contain fragmented or disputed speech. We determine whether gaps are natural or the result of editing.
All calls with Sound Testimony® are confidential — your privacy comes first.
When Audio Authentication Becomes Necessary
Many clients reach out when a recording raises concerns. If something sounds out of place, feels incomplete, or is being used in a legal setting, a forensic review can help determine what is real and what may have been changed.
A Recording Is Used Against You
When a recording becomes evidence, authentication determines whether edits, insertions, deletions, or manipulations occurred.
Your Evidence May Be Challenged
If the integrity of your audio is questioned, forensic analysis verifies whether it remains a true, continuous representation of events.
Accidental Recording With Missing Portions
Unintentional recordings often contain gaps. Authentication clarifies whether these gaps are natural interruptions or the result of editing.
A Recording Was Out of Your Possession
If a device or file was briefly out of your control, analysis checks whether any changes were made during that period.
What You Hear Doesn't Match Your Memory
If you appear in the recording but the content feels inaccurate, a review can reveal missing context, rearranged speech, or modifications.
Your Words Are Missing
If spoken words you remember do not appear in the audio, authentication determines whether they were removed or never captured.
Someone Denies Their Recorded Statements
When a person denies making recorded remarks, forensic review can confirm whether the voice and content are authentic.
Need Help With a Recording?
If you are facing any of these situations, you can contact Sound Testimony for confidential guidance and support.
Contact Sound TestimonyFrequently Asked Questions About Forensic Audio Authentication
A forensic examiner reviews waveforms, spectrograms, metadata, noise profiles, and timing
irregularities to detect edits, deletions, insertions, or manipulation. The goal is to
determine whether the recording is an unaltered, continuous representation of events.
Yes. Even small edits often leave digital signatures such as spectral interruptions, sudden
noise changes, or mismatched file structure. These markers reveal where edits occurred
and how they impact reliability.
Phone calls, voicemails, pocket-dials, smart speakers, body cams, security audio, and digital
file transfers can all undergo authenticity review as long as they have identifiable file
structures and metadata.
Authentication focuses on file integrity. Speaker identification is a separate forensic
process, but both may be used together when authenticity and attribution are questioned.
Yes. Courts frequently accept forensic audio authentication findings when completed with
established scientific methods and documented procedures. Experts may provide written
reports or courtroom testimony.
Timelines depend on recording complexity, recording length, and the number of submitted
files. Single recordings are often completed within standard review windows unless broader
analysis or legal reporting is required.
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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