Acoustics - Vibrations Expert Witnesses: 4

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Acoustics - Vibrations (4)

Acoustics & Vibrations Engineering

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CSTI Acoustics offers professional consulting services in acoustics and noise and vibration control to engineering firms, industrial companies, developers, architects, churches, private owners, attorneys, and government entities.

Both graduates of MIT, Arno Bommer and Bob Bruce have been working together since the early 1980s. Projects have been performed throughout the US including Alaska and Hawaii, and in Canada, Mexico, Brazil, Trinidad, Argentina, Chile, Puerto Rico, England, Scotland, Germany, and Qatar.

• View Robert Bruce's Curriculum Vitae

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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

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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Henry Chamberlain has 50 years of experience in the Glass Industry. His expertise includes just about all aspects of glass from engineering design, manufacturing, strengthening, testing, quality control, installation, fractography, and failure analysis of glass and glazing systems. His experience ranges from automotive, architectural, and industrial glass applications to glass consumer products.

Mr. Chamberlain has held numerous leadership positions in professional associations and is a well-respected expert within the glass industry community. Since 1996, he has contributed to many different publications and given lectures and presentations on glass.

Areas of Specialization:

Computational modeling for structural and thermal design optimization of glazing systems. Mr. Chamberlain was one of the first group of ten people certified by the National Fenestration Rating Council to serve as the "Individual-in-Responsible-Charge" of a laboratory accredited by NFRC to issue product ratings
Design, quality control, and testing of glass parts and glazing systems for demanding architectural and industrial applications
Angle specific spectral models for optimization of the optical properties of fenestration systems
Process control and quality control in the manufacture and fabrication of glass, with emphasis on insulating and laminating technology and the measurement and control of stress during annealing, toughening or bending processes
Fracture mechanics of glass
Specialized spectrophotometric polariscopes, instrumentation used to detect and analyze defects in glass products, and other optical instruments

Litigation Support - Mr. Chamberlain provides expert Forensic Glass and Glazing litigation support. His expertise includes analysis of inclusions and defects, fractographic analysis, stress analysis, and expert opinion regarding glazing system design and glazing methods. Mr. Chamberlain's services are available to counsel representing both plaintiff and defendant.

Areas of Expertise:

Glazing System Design
Glass Failure Analysis
Fractography
Finite Element Analysis (FEA)
Optics & Acoustics

Energy Efficiency

Process Control

Glass Testing

Glass Codes & standards

Glass Safety

View Henry Chamberlain's Consulting Profile.

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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.

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

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
Technical Research and/of Forensic Applications
Dictaphone Restoration and Transfer Services

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: