Acoustics & Vibrations Engineering Expert Witnesses: 2

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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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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