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Audio & Sound Expert Witnesses

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Jonathan Broyles
Sr. Forensic Examiner
P.O. Box 490
Parker (Denver Metro Area) CO 80138
USA
phone: 303-805-5301
fax: 303-841-7386
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Areas of Expertise:
  • Audio, Video and Voice Recordings
  • Voice Identification/Comparison/Elimination
  • Surveillance/Time Lapse Video Processing
  • Authentication, Enhancement, Restoration
  • Noise Reduction/Removal
  • Video Frame/Field Capture and Printing
  • Signal Recovery, Restoration and Clarification
  • Magnetic Microscopy and Imaging Services
  • Media Repair and Cleaning Services
  • Recording Equipment Analysis and Testing
  • Recording Equipment Restoration
  • Playback Speed Correction
  • Media Repair and Cleaning Services
  • Many Tape and Digital Formats Supported
  • Related Litigation Support
  • Dictaphone Restoration and Transfer Services
  • We specialize 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.

     We provide qualified expert witness services to assist litigation support, public defenders, law enforcement, attorneys, government, and the general public.

    Our goal is to help you get the most from your recorded evidence.   Call now to get started.

    Memberships, Affiliations and Training:

    • American College of Forensic Examiners Institute(ACFEI)
    • ACFEI Division of Recorded Evidence
    • 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)


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    Barry G. Dickey
    DABRE, FACFE
    506 Marquis Lane
    Mansfield TX 76063
    USA
    phone: 817-539-0930
    fax: 817-473-3573
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    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.

    Services Include:
  • Analysis Of Audio / Video Evidence
  • Digital Enhancement / Restoration
  • Voice Identification / Elimination
  • Event / Sound Identification
  • Expert Testimony / Consultation
  • Piracy / Copyright Infringement
  • Transcription
  • 4/15/2014 · Audio Forensics
    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.

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    Schuyler Quackenbush, PhD
    336 Park Avenue, Suite 200
    Scotch Plains NJ 07076
    USA
    phone: 908-490-0700
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    Schuyler Quackenbush, PhD, is an expert in Speech and Audio Processing and Compression, and in Media Streaming. In addition, he is an expert in MPEG, ETSI and 3GPP speech, and audio standards.

    Dr. Quackenbush has more than 30 years of professional experience in engineering and engineering consulting, including more than 15 years as Member of Technical Staff at Bell Laboratories and AT&T Laboratories. He has authored over 30 technical articles, books, book chapters and conference papers and is a named inventor on 22 Patents in the U.S. and one in Canada. He is currently Principal Consultant at Audio Research Labs, Faculty at New York University and Chair of the MPEG Audio subgroup.

    Litigation Support - Dr. Quackenbush has more than 10 years of experience as a patent expert witness in more than 17 matters. He has been retained for both plaintiff and defense in matters including Infringement, Non-infringement, and Petition for Inter Partes Review. In this work, he has written more than 25 expert reports , been deposed more than 12 times, and testified in court (jury trial).

    Areas of Expertise:
    • Speech and audio digital signal processing (DSP)
    • Speech and audio signal compression
    • Speech and audio compression standards: MPEG MP3, MPEG AAC, MPEG HE-AAC, MPEG Surround, MPEG Spatial Audio Object Coding (SAOC), MPEG Unified Speech, and Audio Coding (USAC); 3GPP aacPlus, Enhanced aacPlus, AMR, AMR-WB, AMR-WB+; ETSI GSM
    • Measurement of speech and audio signal quality: Mean Opinion Scores, ITU-T and ITU-R quality standards
    • Operating Systems: Linux, MS Windows (hardware drivers and GUI)
    • Programming Languages: C and C++, Matlab, shell, various assembly languages
    • Web Languages: HTML, PHP, MySQL
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    Bruce E. Koenig
    Founder
    9 Kingsland Drive
    Suite 111
    Stafford VA 22556-1353
    USA
    phone: (540) 602-2706
    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, compare voice samples, and enhance video & images.

    Services Offered:
  • On-Site Evaluations of Acoustical Sounds and Environments
  • Prepares Transcriptions
  • 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
  • Conducts Research Regarding Forensic Applications
  • 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.

    A protocol is described to improve the voice intelligibility of investigative and other forensic audio recordings collected via digital recording systems, whether audio only or audio/video units.

    11/25/2008 · Digital Forensics
    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

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    Dr. Durand R. Begault, PhD
    AFC Director
    130 Sutter Street, Floor 5
    San Francisco CA 94104
    USA
    phone: 415-397-0442
    fax: 415-397-0454
    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.

    Areas of Expertise:
    • Audio Technology Patent / Intellectual Property Analyses
    • Forensic Audio and Video Tape Examination / Authentication
    • Analysis of Speech, Alarms, Warning Signal Audibility
    • Voice Identification and Elimination
    • Analysis of ‘Ear Witness’ Testimony
    • Enhancement of Speech from Noisy Audio / Video Tape Recordings
    • Music Copyright Infringement and Musicological Analysis
    • Gunshots
    • Acoustical Test and Measurement - Environmental Sound
    • Noise Exposure
    • Software / Hardware Black Box Testing for Infringement
    • Videotape Image Enhancement
    • Analysis of Digital Recordings
    Please contact the Marketing Department at Charles M. Salter Associates, Inc./Audio Forensic Center for Dr. Begault’s current CV.

    View Consulting Profile.
    8/30/2017 · Audio Forensics
    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.

    Durand R. Begault, PhD
    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.
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    Edward J. Primeau, CCI, CFC
    Michael A. Primeau
    1703 Star Batt Dr.
    Rochester Hills MI 48309
    USA
    phone: 800-647-4281
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    Primeau Forensics has over 30 years of experience helping courts and law enforcement agencies understand the science and technology of Audio and Video Forensics. Primeau Forensics has testified in local, state and Federal courts all over the USA and worked with lawyers around the world. Their services include thorough forensic investigation, detailed easy to comprehend report writing and independent forensic preparation, as well as preparation with the client lawyer.

    Audio Forensic Services:
    • Background Noise Removal / Sound Enhancement
    • Voice Identification
    • Certified Forensic Transcription
  • Audio Recording Authentication
  • Depositions
  • Expert Witness Testimony
  • Video Forensic Services:
    • Video Authentication and Restoration
    • Video Image Enhancement
    • Frame Capture from Video
  • Video Conversion for Court Room Exhibit
  • Depositions
  • Expert Witness Testimony
  • Audio & Video Forensic Expert Witness - Primeau Forensics


    Edward Primeau Audio Video Expert PhotoEdward J. Primeau, CCI, CFC, lead audio video forensic expert, has spent decades testifying as an Audio and Video Forensic expert. He has worked with and learned from some of the greatest trial lawyers in the world.

    Mr. Primeau has completed 100s of successful audio and video forensic investigations, testified in Local, State, and Federal courts across the United States and worked on various International cases. He is a member of AES, ACFEI, and IAI. He is also a Certified Criminal Investigator (CCI), a Certified Forensic Consultant (CFC), as well as a member of the American Board of Recorded Evidence with the American College of Forensic Examiners International.

    Along with audio and video authentication and clarification and enhancement, voice identification is one of Mr. Primeau's most sought after services at Primeau Forensics. He has provided audio restoration of informant wire recordings that served as key evidence in convictions involving two Detroit area judges. In the course of his career, he has completed dozens of forensics-focused assignments for attorneys throughout the United States.

    Michael Primeau Audio Video Forensics Expert PhotoMichael Primeau is currently enrolled as a senior level student through Lawrence Technological University in Southfield, MI pursuing an education in Audio Engineering Technology. Michael is an Audio & Video forensic expert through Primeau Forensics, a business his father Edward Primeau and him operate. Michael has worked full time with Primeau Forensics for 8 years, while studying part time at LTU. Primeau Forensics is an audio & video Forensics investigation company that specializes in audio / video enhancement, audio / video authentication, video comparison and identification, and media evidence recovery. Michael has performed several successful investigations on various international cases. He has also testified as an expert witness at state level.

    Michael has obtained video enhancement training through LEVA (Law Enforcement & Emergency Services Video Association) and Image Authentication and Audio Forensic training through the University of Colorado Denver Center for Media Forensics. At Primeau Forensics, Michael wears many hats in order to complete investigations successfully. From his accredited forensic training, and education at LTU his tenacity and perseverance to solve problems have made him the technical go to guy for friends, family, colleagues, and business partners on many levels.
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    Rod Bergen and Associates (Audio / Video)
    Rod W. Bergen, PE
    Principal Engineer
    23939 Ventura Blvd.
    Calabasas CA 91302
    USA
    phone: 818-591-7896
    fax: 818-222-6911
    Rod Bergen is an Expert Witness and Consultant in the Design & Installation of Audio / Video Systems (home theater, boardrooms, etc) & related System Control Applications. He has managed the design & installation of residential & commercial electrical & related applications since 1975. Mr. Bergen is an experienced Expert witness, familiar with depositions & trial testimony.

    Degrees & Licenses: BSEE, Reg. Prof. Engr. (Control Syst.), Lic. Calif Contractor (Gen'I, Elect, HVAC & Plumb).

    Areas of Expertise:
    • Evaluation of Electrical System Performance
    • Installation Defects
    • Wiring Problems
    • Design Deficiencies
    • Incident Reconstruction
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    David A. Smith, ACFEI, IEEE, AES
    PA USA
    phone: 814-410-4787
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    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, ACFEI, IEEE, AES, has more than two 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:
    • Recording Authentication
    • Tampering & Edit Detection
    • Intelligibility Improvement
    • Transcript Review & Correction
    • Litigation Support
    • Voice Recognition and/or Elimination
    • Expert Testimony
    Intelligibility Improvement of:
    • 911 calls
    • Voice Mail Systems
    • Accidental Recordings
    • Surveillance Recordings
    • Portable Audio Recorders
    • Interviews
    • Depositions
    • Meetings
    • Cell Phone Recordings, etc.
    2/15/2016 · Audio Forensics
    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.

    8/26/2015 · Audio Forensics
    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.

    7/28/2015 · Audio Forensics
    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.

    2/27/2013 · Audio Forensics
    A party in a divorce case hired me after his attorney told him that his wife's council was planning to introduce audio recordings during an upcoming custody hearing.

    1/14/2013 · Audio Forensics
    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.

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    Bryan Neumeister
    Certified Audio & Video Forensic Expert
    44 W. Monroe Street
    Penthouse # 3302
    Phoenix AZ 85003
    USA
    phone: 602-740-6128
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    Bryan NeumeisterBryan Neumeister, CEO of USA Forensics, is a court certified Audio and Video Forensic Expert. Mr. Neumeister has over 34 years of professional experience Clarifying Videos, Still Pictures (film and digital), and Audio Recordings so that jurors can better see and hear evidence. With studios and forensic equipment more advanced than most Federal Agencies, he is able video to large format still pictures for use as Exemplars.

    Mr. Neumeister presents high resolution video in court to explain Procedure or Evidence of Tampering to juries. Using 3D Sonograph and Spectrograph printouts, he can also spot and visually explain the “altering of tapes." His Video Recreations have been honored at the Canne Film Festival and have received 39 Emmy Awards from the National Association of Television Arts and Sciences for Technical Excellence.

    Mr. Neumeister has worked on over 200 Forensic Cases since 2010. His non-military court cases include: RICO, Murder, Murder for Hire, Fraud, Robbery, Armed Robbery, Assault with a Deadly Weapon, Arson, Kidnapping, Bank Robbery, DUI, DWI, Civil Cases...etc. He is certified in Military, Federal, State, Civil, and Aviation court.

    Large Cases include:
    • US Government vs. Charles Keating - Retained as Video Expert
    • State of Arizona vs. Jodi Arias - Retained as Audio and Photography Expert
    • US Grand Jury: The Hope Steffy Case – Video Expert
    • US Government vs. Charles Keating III - Retained as Video Expert
    • US Federal Government vs. State of AZ. - King Case as Video Expert
    • Currently: Encrypted Department of Justice Case
    Areas of Expertise:
    • Audio & Video Analysis
    • Voice Enhancement, Verification, Authentication
    • Forensic Voice Comparison
    • Forensic Linguistics
    • Video Enhancement
  • Aerial Surveillance
  • Still Photography Enhancement
  • Video Up-Resolution to HD Court Exemplars
  • Facial Comparisons / Recognition
  • Emmy Award Winning Crime Scene Recreations
  • Certifications and Affiliations:ACFE, ABRE, APA, NATAS, BMI, ASCAP, AES, ACFEi, PSA, NAB

    View Bryan Neumeister's Consulting Profile.
    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).

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    Herbert Joe, MA, MS, JD, LLM, BCFE, CFC, DABLEE, FACFE
    Managing Partner
    P.O. Box 702287
    Dallas TX 75370
    USA
    phone: 800-650-TAPE (8273) / 214-505-TAPE (8273)
    fax: 773-829-TAPE (8273)
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    Herbert Joe, MA, MS, JD, LLM, BCFE, DABFE, DABLEE, FACFE, has five degrees, including three science degrees and two law degrees, and is a Board Certified Forensic Audio / Video Examiner. He has 29 years of experience providing Forensic Audio / Video litigation support.

    Mr. Joe and his partner have been retained in thousands of criminal, civil, and administrative cases involving thousands of recording throughout the United States, Canada, Mexico, the United Kingdom, India Sri Lanka, and the United Arab Emirates. Representative clients include both sides of the bar in state and Federal courts. High profile cases include the Branch Davidian case, State of Florida vs. George Zimmerman; the Associated Press (Osama bin Laden); consultations with Dr. Phil (Manti Teo), CSI:Miami, TMZ (Michael Jackson), the WSJ, and People Magazine (Mel Gibson).

    Yonovitz & Joe Areas of Expertise:
    • Forensic Audio / Video Authenticity
    • Forensic Voice / Speaker ID
    • Digital Audio or Video Enhancement
    • Text / Video Transcription & Verification
    • Copyright Infringement
    • Forensic Audiology
  • Linguistics
  • Phonetics
  • Acoustics
  • Noise / Sound Analysis
  • Electronic Signature Analysis
  • Alcohol, Drug or Stress Effects on Speech
  • View Herbert Joe's Consulting Profile.