Audio Analysis & Audio Forensic Services

Audio is an auditory perceptual phenomenon. It is easier to record audio evidence now that new devices and apps are available. Because of this, audio evidence is now more useful in court. A forensic audio specialist must always use a reliable, scientific method. 

Forensic audio analysis has been admitted as a scientific method to courts all over the country for the last 35 years. This type of methodology has helped a judge or jury decide the meaning of audio evidence.

Our audio experts offer free consultations to figure out how audio analysis can help our clients’ legal cases. If a suitable method can’t be found, no money will be spent. If the investigation meets the right criteria, it starts by questioning the media to figure out the best course of action.

FORENSIC AUDIO SPECIALIST

audio authentication
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Audio Analysis FAQs

Audio forensic analysis can be important in legal proceedings, such as civil or criminal cases. Our team provides audio forensic services to answer difficult questions like:

Helpie FAQ

  • 1. Is the audio a "fair and accurate representation" in accordance with the minimum standard for admissibility amongst most courts?

    The most successful answer to this question is dependent on the accuracy with which the device generated the audio recording. 

    Creating exemplar samples can help compare a known sample with an unknown recording to see if it is a reliable representation. This is done using authentication methods.

  • 2. Can speech or other sounds be made easier to understand without changing the original recordings?

    Our tools use sophisticated mathematics to evaluate the signal to noise ratio of recordings and reduce unwanted sounds. They also isolate the wanted sounds and boost them while preserving the original recordings without altering them.

  • 3. How loud were the sounds in this recording and could people hear them?

    Our team has done investigations about sounds suspected of harming people or being a nuisance. Our experts, who are audio engineers, use SPL (sound pressure level) measurements to see if the sound meets OSHA standards.

  • 4. Can you synchronize an audio file with a video file accurately?

    Usually, audio and video signals can be synchronized if they are recorded at a similar rate. In many cases, it is also necessary to confirm the time of each recording.

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    AUDIO FORENSIC ANALYSIS SERVICES

    forensic audio analysis

    AUDIO AUTHENTICATION

    Authentication is the process of substantiating that the asserted provenance of data is true. As defined in SWGDE Best Practices for Forensic Audio [2], an audio authentication examination seeks to determine if a recording is consistent with the manner in which it is alleged to have been produced. A large part of audio authentication requires analysis of the time domain as well as the frequency domain.

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    audio authentication

    AUDIO ANALYSIS

    We often need to analyze audio and video evidence together in our cases. For example, audio evidence such as a 911 call must be synchronized with a video recording, so audio analysis is essential. This ensures the accuracy of the timing when presenting the evidence to the jury.

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    forensic audio analysis

    SITE INSPECTION

    When the way a piece of equipment was used is being disputed, a site inspection is often necessary. This inspection tests the equipment or looks at the site, and a report can then be made. We have helped one law enforcement client save an 8-figure amount through a site inspection and forensic analysis.

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    forensic audio enhancement

    AUDIO ENHANCEMENT

    Our experts use a spectrogram, noise reduction, and signal processing to identify and remove disruptive or harmful noises in recordings. However, the quality of the recording (e.g. sampling rate) can limit the success of these forensic audio enhancements, which are renowned worldwide.

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    Detroit Audio Expert

    AUDIO TRANSCRIPTION

    Audio transcription is the process of turning audio recordings into written words. The recordings are enhanced and clarified by a forensic technician in a controlled environment. After transcription, an audio expert checks the text.

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    PRIMEAU FORENSICS

    OUR BENEFITS

    WHY DO WE EXIST?

    WE EXIST TO FIND THE TRUTH

    Through investigations by helping answer difficult questions using audio forensics, video forensics and image forensics.

    STRATEGIC AND UNBIASED

    Primeau Forensics’ analysts and experts perform assignments from a strategic and unbiased perspective.

    RELEVANCE OF YOUR EVIDENCE

    Our team helps our clients to understand their sometimes complicated digital evidence used in their case.

    STATE | FEDERAL | INTERNATIONAL

    EXPERT WITNESS TESTIMONY

    Edward Primeau, our lead forensics expert, has over 35 years of experience in audio expert testimony. He has had the opportunity to collaborate with renowned trial lawyers from around the world.

    We use peer-reviewed methods to accurately verify audio evidence. This ensures the reliability of our experts and our clients' investigations.

    We have helped legal teams in courtrooms across the US, and can provide expertise to create a successful litigation plan. Our trial experience makes us stand out from other companies.

    audio forensic expert