Audio Authentication and Visual Inspection
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 characteristics of an audio recording without even having to listen to it. These characteristics can be important, especially when it …Read More
Using a Compressor for Forensic Audio Enhancement
As an Audio Forensic Expert, knowing what tools are available to me and how they work is extremely important. One type of signal processor that I frequently use is a compressor. While this is often thought of as a tool for music production, it serves …Read More
Sir Paul McCartney is NOT Dead
So, you may have heard the rumor that Sir Paul McCartney is dead. In fact, the evidence that has been presented over the years is quite entertaining. The ?Abbey Road? album cover with Paul barefoot and songs like Strawberry Fields Forever or Revolution 9, that …Read More
How to Set Up a Microphone for CCTV Systems
Closed circuit television systems have become a major contributor of evidence to court cases. While the video from these systems is often very important, the audio can often play just as much of a role in the investigation. At Primeau Forensics, we often are hired …Read More
Blindspot – How to Make Digital Audio Recordings for Evidence
As an Audio Forensic Expert, my day to day activity includes forensic services like audio enhancement and authentication, as well as voice identification. Audio enhancement is probably the most common service I provide, because more often than not, the audio evidence was not recorded in …Read More
Voice Identification: Characteristics of an Unknown Voice
One of the most important elements of Voice Identification is the ability to recognize the characteristics of the human voice. There are many elements to distinguish these characteristics, some audial, some visual.
Think about when you have your back to a person who enters the room …Read More
Knowing Your Digital Audio Recorder
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
How to tell if an audio recording has been edited?
When one of the parties in a 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 …Read More
New Audio Recording on Michael Brown Shooting: Real or Fake?
I was contacted today by two media outlets regarding an audio recording that was released last night to CNN. The recording is alledged to be a video chat with the gunshots that killed Michael Brown in the background.
I began my forensic investigation by researching the …Read More
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The Structured Approach to Objective Audio Enhancement
The audio enhancement processes that I have learned are some of the accomplishments of which I am most proud as a forensic expert. Audio enhancement is both an art and a science; and as an audio forensic expert with 30 years of experience, I can …Read More