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. As a result, audio evidence is now more useful in court. A forensic audio specialist must always use a reliable, scientific method.
Scientific and Admissible
Forensic audio analysis has been admitted as a scientific method in courts across the country for the past 35 years. This type of methodology has helped a judge or jury decide the meaning of audio evidence.
Value-Driven Services
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 begins by questioning the media to determine the best course of action.
Discover the Value in Your Audio Evidence.
Discuss the details of your audio and video recordings with our forensic experts to determine the most effective path forward for your evidence.
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.
AUDIO FORENSIC ANALYSIS SERVICES
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, an audio authentication examination determines 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 both the time and frequency domains.
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 process ensures the accuracy of the timing when presenting the evidence to the jury. By authenticating combined media, our forensic experts provide an objective, reliable foundation for your strategy.
SITE INSPECTION
When the use of equipment is disputed, a site inspection is necessary. This inspection tests the equipment or examines the site, and a report can then be prepared. We have helped one law enforcement client save an 8-figure amount through site inspection and forensic analysis. By documenting the environment and recording setup, we ensure every technical variable is measured and validated.
AUDIO ENHANCEMENT
Our experts use a spectrogram, noise reduction, and signal processing to identify and remove disruptive noises in recordings. However, the recording quality (e.g. sampling rate) can limit the success of these forensic audio enhancements, which are renowned worldwide.
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 for accuracy, compliance, and clarity for your case.
ARTIFICIAL DETECTION
Voice cloning and generative audio technologies are advancing rapidly. "Deepfake" and AI audio detection involves highly technical, scientific algorithmic analysis to identify anomalies, manipulated vocal patterns, and AI-generated recordings that support the truth.
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 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:
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.