Mr. Broyles represents 14 years experience in providing expert witness and forensic examination services combined with 32+ years experience in research, design & development of computer software and electronic products to include forensic lab equipment and forensic audio/video/image software. This combination of experience gives invaluable insights into the forensic processes and application in each unique case or project. Court Qualified. Detail CV available on request.
Specializing in Recorded Evidence Analysis, Enhancement and Restoration Services of Video, Audio, Sound, Voice, Surveillance and Time Lapse Recordings; both digital and analog; through the use of custom and professional analysis systems.
Providing court qualified expert witness services to assist litigation support, public defenders, law enforcement, attorneys, government, and the general public. Since 2004. Local, nationwide and international.
Stated goal is to help you get the most from your recorded evidence. Call now to get started.
Memberships, Affiliations and Training:
Audio Engineering Society (AES)
Institute of Electronics and Electrical Engineers (IEEE)
Law Enforcement Video and Emergency Services Video Association (LEVA)
New York Institute for Forensic Audio (NYIFA)
Society of Motion Picture and Television Engineers (SMPTE)
International Association of Identification Rocky Mtn Division (RMDIAI)
Barry G. Dickey is the certified forensic expert for Audio Evidence Lab, a laboratory specializing in the Analysis of Audio / Video Evidence. Mr. Dickey has examined evidence in over 1500 cases in the USA, Canada, Mexico, Japan, Philippines and Europe. With over 20 years of experience, he has provided expert testimony in federal and state courts on issues involving audio, video, and voice identification. Utilizing DSP technology, analytical equipment, and microscopic resolution, Mr. Dickey employs scientifically accepted techniques to provide the critical evidence required in the courtroom.
He has consulted with news networks in reference to the "Osama bin Laden Tapes" and "2012 Presidential Debates" as well as tapes released by other foreign news networks. Recent cases also include "NFL Bountygate" and "Holy Land Foundation" investigations.
The recent proliferation of audio and video recordings coming from various terrorist organizations around the world presents two distinct areas of concern to the forensic examiner. This article presents information on the authenticity methodology of videotapes, including a perspective on "implied evidence" and the continuing necessity for voice identification.
Bruce E. Koenig is the senior examiner and founder of BEK TEK LLC. He has been involved in the Forensic Analysis of Audio and Video Recordings on a full-time basis since 1974. Mr. Koenig & his associates conduct forensic examinations of audio, video & still images (e.g. JPEG) media to authenticate, improve voice intelligibility, identify/classify voice and non-voice signals, and enhance video & images.
On-Site Evaluations of Acoustical Sounds and Environments
Presents Expert Testimony
Assists Attorneys in Preparing for Cross-Examination of Opposing Experts
Evaluates Appropriate Recording and Analysis Equipment
Provides Forensic Training in Audio/Video Analysis
The formal procedures for the scientific authentication of audio media in investigative matters and legal proceedings have been updated as a result of the widespread conversion from analog to digital technology since the 1990s.
Authenticity examinations of VHS (video home system) cassettes are commonly performed in forensic laboratories and can usually determine whether a submitted recording is original, continuous, and unaltered. One of the important determinations of this analysis is identifying any portions that have been recorded over
Durand R. Begault received a PhD in Computer Audio from UC San Diego in 1988 and an MFA from Mills College in 1981. He has been associated with the Audio Forensic Center and Charles M. Salter Associates, Inc. since 1996 and has worked as an expert witness, legal consultant, and acoustical consultant on a variety of audio-related cases since 1988. Dr. Begault also holds a research position at NASA Ames Research Center and is an adjunct faculty member at McGill University. He is the author of several U.S. patents and is qualified as an expert witness in both Federal and State Courts. Dr. Begault has testified in over 40 cases on a variety of audio technology and forensic audio-related cases.
Recordings involving cellular telephones or personal digital assistants (“PDAs”) are increasingly the source evidence in audio forensic examinations, compared to recordings originating with other devices such as hand-held digital recorders. On modern PDA cellular telephones recordings can be made either directly to the telephone or transmitted as voice mail messages. The current investigation focuses on differences in the two types of recordings in terms of dynamic range and linearity of levels. Such information can be important for characterizing the distance of sound sources relative to the microphone and are important for understanding transformation of recorded speech and non-speech sounds.
Written by an author with expertise in both theory and applications, 3D Sound for Virtual Reality and Multimedia provides readers an essential technical foundation in sound and virtual reality. The book covers components of spatial auditory displays; psychoacoustics of spatial hearing; what sounds are appropriate to spatialize; applications to human-machine interfaces (including virtual reality and multimedia); computer music; and room acoustics.
Audio Video Forensic Analysis Expert Witness Nick Barreiro
Principle Forensics is a cutting-edge Media Forensics Laboratory. They Recover, Authenticate, Enhance, and Analyze all types of recorded evidence, including Video, Audio, and Digital Images. Principle Forensics backs all their work with experienced, highly trained, expert testimony.
Nick Barreiro, AVFA, DIVRT, Chief Forensic Analyst, is a Certified Audio Video Forensic Analyst and an FBI-trained member of the Digital Imaging and Video Recovery Team. During his 15-year law enforcement career, he was a patrol sergeant, technology project manager, media forensics expert, detective, digital evidence specialist, and patrol officer. Prior to his career in law enforcement, Mr. Barreiro was an audio engineer and producer in California. He also worked for KBMB radio in Sacramento and has extensive experience and training in audio enhancement and analysis.
Litigation Support - Mr. Barreiro works with attorneys representing plaintiffs and defendants in civil or criminal matters in which Audio or Video Evidence plays a key role. He has tremendous technical knowledge and training, but also extensive experience on the witness stand.
Mr. Barreiro has enhanced and analyzed digital media from simple slip-and-fall cases and minor traffic accidents to complex investigations such as homicides and officer-involved shootings. He has testified 100s of times in criminal cases, civil cases, arbitration, and depositions. A highly trained and experienced forensic analyst, he provides technically detailed and precise results with expedited turnaround times.
Audio Expert David Smith of Sound Testimony® specializes in Audio Forensic Analysis, Improving Recorded Speech Intelligibility, & Recording Authentication. Our proprietary hardware/software system recovers intelligible speech and other sounds from noise-intensive backgrounds & poorly recorded media. David A. Smith, IEEE, AES, has more than three decades of professional experience with audio enhancement. Experienced in criminal and civil cases including murder, corporate fraud, employment discrimination, sexual harassment, labor, and family law. Mr. Smith consults with counsel offering audio forensic evidence examination, analysis, litigation support, expert advice, expert testimony, and related expert witness services including preparation of cross-examinations and courtroom presentations. Clients include Prosecutors, Defense Attorneys, Family Law & General Practice Attorneys, other Legal & Investigative Professionals, HR Depts., Corporations, Private Detectives, & Individuals. Services Offered:
In Audio Forensics, it often comes down to ears versus microphones. In one corner, we have the human ear with all its amazing capabilities. In the other corner, the fantastic piece of technology known as the microphone, with its ability to record sound to a digital file or tape for later playback.
A confrontation between an inmate and a Corrections Officer leads to accusations of mistreatment on one side and claims of justifiable action on the other. It was one person's word against another until an unexpected recording came to light and, with the help of sophisticated audio forensic analysis and processing, the truth was revealed.
Pocket dialing occurs when a mobile phone's touch pad is pressed by something in a person's pocket or purse, or, if the person happens to sit down a certain way, a part of their anatomy. If the pressed key or screen surface area is programmed to dial or redial a telephone number, a call occurs. This call often goes undetected by the phone's owner. Some phones are more prone to this phenomenon than others.
You have an audio recording that may be used as evidence in an upcoming court case. Looking for a way to make it easier to hear, you do an on-line search and come upon a list of "Audio Restoration companies." The ads state that these sites can lower or eliminate noise and restore recordings to their original quality.
USAForensic is a boutique state-of-the-art forensics company with two labs in Phoenix Arizona and our booking office on the east coast. This helps with an earlier start each day and with overseas cases.
Specializing in forensic Audio, Video, Cell Phones, Computers Photography & ”Cell Tower tracking” debunking. USAForensic is court certified in Federal, US Military, US District, many State and county courts throughout the United States. International cases are not uncommon. Mr. Neumeister has worked in 23 countries over the past 40 years.
Clients range from the largest Law firms to private firms, large corporations, the Department of Defense, government agencies, advocacy groups, the DOJ to the innocence project.
Technology is flying past the court system. We’re here to work with attorneys to understand how to deal with digital or analog evidence, how to challenge it or how to get it admitted into evidence.
We prefer to work in the background assisting attorneys, even writing out Daubert 702 & 902 issues regarding other parties evidence submissions.
In a recent Federal Daubert hearing USAForensic worked with DOD JAG attorneys to get police cell tower tracking ruled inadmissible. The federal judge rule police cell tower tracking as “Garbage in, Garbage out”.
Not a verifiable science, not peer reviewed, no scientific white-paper to support its use.
Over 600 cases in the past 3 years. From the very highest profile to simple straightforward forensic cell phone extractions or video and audio clarification for court use.
To us Data is Data & takes no side, but it has to be verifiable data.
We've all seen the TV crime shows where the forensic technician opens the grainy surveillance, then zooms in on a tiny face, license plate or scrap of paper, hits the enhance button and, magically, the image becomes sharp and clear (accompanied by appropriate background music).