Acoustics - Vibrations Expert Witnesses: 2

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Acoustics - Vibrations (2)

Acoustics and Vibrations Engineering

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SERVICES: Audio and video recording authentication, enhancement, transcription, and analysis, including body worn camera and security video recordings. Acoustic forensic analysis, including audibility of warning signals, speech - voice comparison, and gunshot - weapon recording analysis (e.g., Taser, ShotSpotter). Audio technology and patent expert witness/consultant. Forensic musicology analysis. Forensic field recording and analysis per ANSI and recognized standards.

EXPERTISE: Consultation in over 800 audio-video and acoustic forensic cases since 1987. Expert testimony over eighty times, in U.S. Federal and State courts including the United States International Trade Commission (USITC), and courts in Canada and International arbitration panels (World Bank-ICSID).

DEGREES/MEMBERSHIPS: Ph.D. UC San Diego (Computer Audio) 1987; Fellow, Audio Engineering Society (AES); Member, Society of Forensic Engineers and Scientists (SFES), Acoustical Society of America (ASA).

8/30/2017 · Audio Forensics

Forensic Sound Analyses of Cellular Telephone Recordings

By: Dr. Durand R. Begault

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.

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3D Sound for Virtual Reality and Multimedia

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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Mr. Broyles represents 19 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.

Areas of Expertise:

Audio, Video and Voice Recordings
Voice Identification / Comparison / Elimination
Forensic Transcription / Transcriptions
Surveillance/Time Lapse Video Processing
Authentication, Enhancement, Restoration
Noise Reduction /Removal / Improve Intelligibility
Video Frame/Field Capture and Printing
Signal Recovery, Restoration and Clarification
Magnetic Microscopy and Imaging Services
Vintage/Obsolete Computer Data Recovery and Conversion, Translation

Digital Image/Photograph Analysis
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
Technical Research and/of Forensic Applications
Dictaphone Restoration and Transfer Services

Specializing in Recorded Evidence Analysis, Enhancement and Restoration Services of Video, Audio, Image, 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: