Detect Edits and Tampering
We analyze waveforms, spectrograms, metadata, continuity, and more 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® applies established forensic protocols and advanced analysis to determine whether the audio is a reliable representation of what was originally recorded.
Why Authenticate Audio?
Determining the truth is important. Whether a recording will be entered as evidence or is simply for personal clarity. In court, audio must have forensic integrity. In private matters, you also deserve to know the truth.
Disputed or Missing Audio
Voicemails, pocket-dials, and private recordings often contain fragmented or hard to discern speech. We determine whether gaps are natural or edited and whether the audio supports or contradicts statements made about it.
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 authentication examination can help determine what is accurate and what may have been changed. These are the most common situations where audio authentication becomes essential.
A Recording Is Being Used Against You
A recording used against you may raise concerns about accuracy or intent. If anything sounds altered or out of context, authentication helps determine whether the file was changed in ways that affect your situation.
Your Recording May Be Challenged
If a recording you plan to submit may be challenged, authentication becomes essential. A forensic review confirms whether the recording is accurate or if anything was added, removed, or rearranged.
Accidental Calls 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 out of your control, authentication checks whether any changes were made during that period.
What You Hear Doesn't Match Your Memory
If your voice is on the recording but the content sounds inaccurate, authentication can reveal missing words, rearranged speech, or modifications.
Someone Denies Their Recorded Statements
Hearing yourself in a recording that doesn’t match your memory can be unsettling. Authentication shows whether the audio is real or if missing context, edits, or rearranged parts caused the differences.
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 TestimonyNeed Help With a Recording?
If you are facing any of these situations, you can contact Sound Testimony for confidential guidance and support.
Frequently Asked Questions About Forensic Audio Authentication
Yes. Even small edits often leave digital signatures that can be detected by a forensic audio expert.
All audio recordings, including those from phone calls, voicemails, pocket-dials, body cams, security cameras, interviews, meetings, and smart speakers can undergo authenticity examinations.
Authentication focuses on file integrity. Speaker Identification is a separate forensic process, but both may be used together when authenticity and speaker identity are questioned.
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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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