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Audio Evidence 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
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 (ACFE)
    • American Board of Record Evidence (ABRE)
    • 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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    Robert W. Sanderson
    President
    3 Neptune Drive, Suite Q14b
    Poughkeepsie NY 12601
    USA
    phone: 845-797-3850
    fax: 845-463-3116
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    Welcome to the most technologically advanced audio/video lab in the world!

    Robert W. Sanderson is the President and Chief Engineer at Audio Video Forensic Labs Inc. Professionally trained and certified in audio / video authentication and enhancement as well as voiceprint identification. His experience and intuitive capabilities both in the lab and in the courtroom can yield impressive results where others fail. Job 1 - Help deliver usable evidence whenever possible.

    Areas of Expertise
    Forensic Audio Services:
  • Forensic Audio Examinations and Authentication
  • Tampering Examinations
  • Noise Reduction
  • Audio Enhancement
  • Voice Identification
  • Wiretap Analysis
  • Taser Audio Authentication
  • Bose 360 Degree Hi-Fi Courtroom Playback
  • Forensic Video Services:
  • Video Enhancement
  • Forensic Video Authentication
  • 3D Facial Reconstruction
  • Dash-Cam Video Systems
  • Height Analysis and Comparison
  • Speed Estimation
  • Stabilize Cellphone Video
  • Video Enlargement
  • Mobile Video Lab
  • Taser Video Authentication
  • Courtroom Display Systems
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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.
    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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    Jennifer E. Owen
    President
    PO Box 189
    632 New Dover Road
    Colonia NJ 07067
    USA
    phone: 732-574-9672
    fax: 732-381-4523
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    Jennifer Owen Digital Audio Expert PhotoJennifer E. Owen has worked as a Forensic Recorded Evidence Media Analyst since 1995. She was a Chief Forensic Examiner at Owl Investigations, Inc. and specialized in Audio and Video Analysis and Voice Identification. In 2001, she obtained her Master’s degree in Criminal Justice. In 2011, she started her own company, Owen Forensic Services, LLC.

    Ms. Owen has analyzed hundreds of Audio, Video, and Voice Identification cases, including forensic transcription and meta - data recovery of digital files. She has provided forensic consulting, examination, and expert testimony in 35 different states. Ms. Owen provides litigation support services to attorneys representing both Plaintiff and Defense.

    With a combined 50 years of experience, Ms. Owen and her father and mentor, Thomas J. Owen, have personally consulted on several high profile cases such as Trayvon Martin, Mel Gibson, Osama bin Laden, Woody Allen and Mia Farrow, Lady Diana, Bruce Springsteen, Brandy, LL Cool J, Britney Spears, Elvis Presley, and Mariah Carey to name a few.

    Jennifer Owen is currently a member of The American College of Forensic Examiners and is on the board of The American Board of Recorded Evidence.

    Services Offered:
    • Audio - Forensic Analysis of all audio recordings. Including but not limited to: 911 Calls, Voicemails, undercover recordings, witness statements, interviews, and any enhancement of any audio recording
    • Authenticity Analysis of Audio Recordings - To confirm or deny possibility of tampering, or establish if the recording has been altered in any way
    • Video - Forensic Analysis of all video recordings and digital images. Including but not limited to: Surveillance video enhancement, Cell phone video recordings, image enhancement for purposes of identification
    • Video Authenticity of Video Recordings - To either eliminate the possibility of tampering or establish if the video has been altered
    • Voice Identification - To either eliminate or establish if your suspect’s voice is the one in question on the recording
    View Jennifer Owen's Consulting Profile.
    3/21/2011 · Forensics
    The forensic science of voice identification has come a long way from when it was first introduced in the American courts back in the mid 1960's.

    2/9/2011 · Forensics
    Audio tapes, Video Tapes, Voice Identification, Enhancement and Authenticity Issues related to the admissibility of recorded media must pass certain legal criteria before it can be presented as evidence in a court of law.

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    Paul Jacobs
    Forensic Audio, Video, Photography Expert
    650 Blackwood Street
    Sacramento CA 95815
    USA
    phone: 916-812-2508
    fax: 916-922-5335
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    Paul Jacobs provides Forensic Photography, Videography, Mapping, Visibility and Audio services to Plaintiff or Defense counsel looking for scientifically accurate event reenactments and documentation.

    Mr. Jacobs collects data that is fair and accurate for use as demonstrative evidence, or to be analyzed by other experts. He typically works in conjunction with accident reconstructionists and human factors experts in controlled event reenactments of incidents. He has experience working with many other subject matter experts in other fields.

    Mr. Jacobs has served as a police officer, then as a commercial photographer, and then under the mentorship of a well established and respected technical expert. He has worked extensively in mapping and 3D modeling as a technical consultant and project manager and has attended numerous classes, workshops, seminars, etc.

    Litigation Support - Paul Jacobs has performed 1,000s of investigations related to vehicle collisions, deaths, and property loss / damage. Since moving to the private sector, he has performed photography, videography, audio, mapping, visibility studies and dynamic testing for civil cases involving vehicle and pedestrian accidents, trip and falls, defamation, property damage/loss, wrongful deaths and maritime accidents.

    Areas of Expertise:
    • Forensic Photography - Image capture, editing, compositing, HDR, analysis, macro, aerial, rephotography
    • Forensic Videography - Video capture, editing, analysis, and enhancement
    • Forensic Audio - Recording, preservation, enhancement, and measurement
    • Forensic Mapping - Mapping and modeling of 2D and 3D scenes. Measurements of scene elements including topography, lighting, vegetation, and changes.
    • Visibility Studies and Analysis - Measure and document scene elements related to lighting and visibility including contrast, glare sources, occlusions, and anomalies.
    • Dynamic Imaging- Collection of data related to speed and movement.
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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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    Gregg Stutchman
    Steve Buller
    421 Walnut St., Suite 120
    Napa CA 94559
    USA
    phone: 800-799-0828
    fax: 707-257-3240
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    Stutchman Forensic Lab is a state-of-the-art forensic audio, video and imaging laboratory operated by Gregg Stutchman and Steve Buller. They provide services to clients throughout the entire USA.

    Gregg has worked in the criminal justice system since 1973 a police officer, a State Licensed Investigator and since 1992, as a forensic analyst when he opened the lab. Gregg has progressively continued his education and training in forensic technology. Over the past 15 years he has conducted forensic analysis on several thousand audio and video recording. Gregg’s expertise also includes all phases of forensic photography. He testifies extensively as an expert witness throughout the United States in state and federal court as well as in depositions.

    Steve has worked in the forensic audio and video field since 1998. He began his forensic career by working with Gregg Stutchman while attending college. Steve has completed numerous Forensic Audio and Video Certification trainings, and is a member of the American College of Forensic Examiners (AFCE) and the American Board of Recorded Evidence. Mr. Buller has co-presented lectures with Gregg Stutchman on forensic audio and video issues at professional conferences and meetings throughout California and Nevada. Mr. Buller specialty is directed towards Forensic Video Enhancement and Analysis. His work has resulted in the successful outcome of countless criminal and civil litigations.

    Services Offered:
  • Video Image Enhancement (including digital)
  • Audio Enhancement, Noise Removal, Voice Amplification & Speed Correction
  • Demultiplexing, Slowing & Frame Freezing of CCTV Surveillance Videos
  • Computer Generated Still Photographs & Enlargements Produced from Video
  • Forensic Analysis of Audio & Video Recordings for Altering, Editing, Sequencing and Timing of Recorded Events
  • Computerized Crime Scene Reconstruction from CCTV Security Videos Using Photogrammertry
  • Voice Identification & Comparison
  • Forensic Photography

    Memberships and Affiliations:
  • American College of Forensic Examiners
  • American Board of Recorded Evidence
  • Evidence Photographers International Counsel
  • American Society for Photogrammetry
  • Audio Engineering Society
  • California Association of Licensed Investigators
  • Los Angeles Superior Court Panel of Experts
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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.