22 episodes

My forensic philosophy is that authentication and clarification of audio/video media combines art as well as science. The methods that I use require attention to detail and scientific principles, complemented by an appreciation for clarity and aesthetics. My techniques are derived from both a formal education and the application of skills gained by working in many forensics situations.

Blindspot: An Introduction to Forensic Science and Expert Witness Testimony Ed Primeau

    • Science

My forensic philosophy is that authentication and clarification of audio/video media combines art as well as science. The methods that I use require attention to detail and scientific principles, complemented by an appreciation for clarity and aesthetics. My techniques are derived from both a formal education and the application of skills gained by working in many forensics situations.

    Forensic Audio Enhancement -Equalization

    Forensic Audio Enhancement -Equalization

    Forensic audio enhancement is a scientific process. Remove the unwanted sound and increase the wanted sound. In many cases, based on our 34 years of experience, the wanted sound is most always dialogue. The Use of Equalizers for Forensic Audio Enhancement An equalizer is one of the most important filters or tools for audio enhancement. […]

    • 11 min
    21: Audio Enhancement – Compression

    21: Audio Enhancement – Compression

    As an Audio Forensic Expert, knowing what tools are available for audio enhancement and how they work is extremely important. While compressors are often thought of as tools for music production, they serve many functions in the Audio Forensic world. Like with most audio signal processors, it takes training and experience to operate compressors properly […]

    • 9 min
    20: Body-worn Cameras with Sgt. Bill Tilson

    20: Body-worn Cameras with Sgt. Bill Tilson

    Sgt. Bill Tilson is a police officer with the Coeur d’Alene Police Department in Coeur d’Alene, Idaho. He has been working in the department since September 2002 and began working with body-worn cameras in 2012 when the department began issuing them to officers. He received a Bachelors degree in Criminal Justice and Corrections from Lewis-Clark […]

    • 24 min
    Audio Enhancement – Noise Reduction

    Audio Enhancement – Noise Reduction

    Most recordings that I come across as an Audio Forensic Expert require audio enhancement. This is because they are made in poor conditions and have an abundance of noise. Though there are many ways to reduce the noise floor in a recording, there is no guaranteed method. The noise floor can be defined as a sum of […]

    • 11 min
    18: Creating Video Work Product as an Audio Video Forensic Expert

    18: Creating Video Work Product as an Audio Video Forensic Expert

    Video work product is a way to document forensic investigations, like evidence recovery, for reference at a later date. Processes and procedures are documented using a video camera by a forensic expert during a forensic investigation for future use. I have referred back to my video work product many times during the course of a […]

    • 9 min
    17: How to Make Digital Audio Evidence

    17: How to Make Digital Audio Evidence

    Digital Audio Evidence can often be one of the most important pieces of evidence for a case, so it should always be given a great deal of attention. I’m going to cover some tips on how to create the best audio recording possible, whether it’s a police interview, a concealed recording or anything in between. […]

    • 13 min

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