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Category Archives: Audio Authentication

Audio authentication is the process of determining if an audio recording is authentic or if it has been tampered with/edited.

The first step is to establish a chain of custody. A chain of custody does not, in and of itself, establish a recording as being authentic. Audio evidence preserved in the original device has more digital integrity to pass authentication testing.

Audio Forensic Expert performs extensive audio authentication of both the audio content through electronic measurement and metadata analysis.

Reel to Reel Audio Tape Authentication and Analysis

January 4, 2020 Audio Forensic-ExpertAudio AuthenticationLeave a comment0

How do you Authenticate Reel to Reel Audio Tape?

One of the
activities performed in a forensic audio laboratory is a reel to reel tape
authentication and analysis test. This is the scientific process of determining
the authenticity and integrity of a reel to reel recording. Although reel to
reel …Read More

Los Angeles Times & Ted Rall: Forensic Video Response

September 11, 2015 Audio Forensic-ExpertAudio AuthenticationLeave a comment0

I was hired by the LA Times to perform a forensic audio investigation on a 2001 recording of a jaywalking citation being given to Ted Rall. The LA Times posted my results in a recent article to clarify the reasons behind Ted Rall’s dismissal from …Read More

Audio Authentication and Visual Inspection

April 21, 2015 Audio Forensic-ExpertAudio AuthenticationLeave a comment0

Audio Authentication and Visual Inspection
Sound waves can tell us a lot about a recording. Like metadata, the visual elements of a sound wave can expose the characteristics of an audio recording without even having to listen to it. These characteristics can be important, especially when …Read More

Knowing Your Digital Audio Recorder

December 18, 2014 Audio Forensic-ExpertAudio Authentication2 Comments0

With digital audio recorders, there are a lot of options when it comes to the quality of the audio recording. Despite the easy access to these options, they are often overlooked. People are either unaware of these settings, or simply forget to check them when …Read More

authentication of digital audio recordings

Authentication of Digital Audio Recordings

November 11, 2014 Audio Forensic-ExpertAudio Authentication, Critical Listening1 Comment0

How to Tell if an Audio Recording has been Edited
When one of the parties in litigation believes that an audio recording was tampered with or edited, an audio forensic expert is brought in to investigate the recording. When we authenticate an audio recording, the first …Read More

Audio Anomalies Discovered on Video Evidence

March 26, 2013 Audio Forensic-ExpertAudio Authentication, Audio Forensic Expert1 Comment0

One of the activities of an audio forensic expert is to determine whether or not an audio recording has been altered or edited when it has been submitted to be used in the courtroom. As an audio forensic expert, I find that when people are …Read More

Release or Destroy Audio Evidence After Litigation

January 16, 2013 Audio Forensic-ExpertAudio Authentication, Audio Forensic ExpertLeave a comment0

An audio forensic expert listens to audio recordings of litigation points during a forensic investigation. Oftentimes, these audio recordings are very sensitive in nature. They are crucial to the litigation and must be destroyed or returned to their provider once the litigation is complete. Generally, …Read More

The Why and How of Audio Evidence Integrity

August 16, 2012 Audio Forensic-ExpertAudio AuthenticationLeave a comment0

When audio recordings are used in any litigation, the integrity of the evidence is not only important, but oftentimes questioned. It?s crucial to consider evidence integrity before you present your evidence in court.

As an audio forensic expert, I am often asked to authenticate audio evidence …Read More

Tips on Using Digital Voice Recorders in Litigation

August 15, 2012 Audio Forensic-ExpertAudio Authentication2 Comments0

People are using audio evidence in legal proceedings more than ever before in the history of litigation. Our electronic society involves many recording devices such as:

Voice mail
Smart phones
Digital voice recorders

Because these devices are so affordable and readily available, victims of unlawful acts …Read More

Maintaining Audio Evidence Integrity

June 5, 2012 Audio Forensic-ExpertAudio Authentication1 Comment0

Throughout the course of my professional career, the necessity to maintain the integrity and the chain of custody of the original evidence has never changed. As a forensic expert, I am often asked to authenticate and clarify audio evidence that is not original, and that …Read More

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