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.
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.
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.
Dr. John Strawn, Ph.D. (Stanford, 1985) has served as testifying expert in patent and trade secret cases, conducted extensive prior art searches, and written expert reports, working for both plaintiffs and defendants. He has conducted software analysis of thousands of pages of source code. Dr. Strawn has over 30 years experience in software development (assembly language, Fortran, C, C++, Java, HTML, XML). He is experienced in digital signal processing, especially for audio and music, including audio compression such as MP-3. As an employee and as an independent consultant he has worked on teams in large and small companies on cutting-edge technology. Having been a Fulbright scholar in Germany, he can easily work with source material in German. He is an accomplished public speaker and has published extensively.
Testifying Experience: 19 depositions and 3 trials to date. includes Lucent v. Microsoft (San Diego, CA, February 2007).
In public talks about audio, one often sees a timeline in which "major changes in the audio industry" are said to occur every 10, 25, or perhaps 50 years. Rather than searching for periodicity in a one- or two-dimensional timeline, in this article it will be more helpful to start out by enumerating some of the multidimensional axes along wchich change occurs
USAForensic is a boutique state-of-the-art forensics company with two labs in Phoenix Arizona and our booking office on the east coast. This helps with an earlier start each day and with overseas cases.
Specializing in forensic Audio, Video, Cell Phones, Computers Photography & ”Cell Tower tracking” debunking. USAForensic is court certified in Federal, US Military, US District, many State and county courts throughout the United States. International cases are not uncommon. Mr. Neumeister has worked in 23 countries over the past 40 years.
Clients range from the largest Law firms to private firms, large corporations, the Department of Defense, government agencies, advocacy groups, the DOJ to the innocence project.
Technology is flying past the court system. We’re here to work with attorneys to understand how to deal with digital or analog evidence, how to challenge it or how to get it admitted into evidence.
We prefer to work in the background assisting attorneys, even writing out Daubert 702 & 902 issues regarding other parties evidence submissions.
In a recent Federal Daubert hearing USAForensic worked with DOD JAG attorneys to get police cell tower tracking ruled inadmissible. The federal judge rule police cell tower tracking as “Garbage in, Garbage out”.
Not a verifiable science, not peer reviewed, no scientific white-paper to support its use.
Over 600 cases in the past 3 years. From the very highest profile to simple straightforward forensic cell phone extractions or video and audio clarification for court use.
To us Data is Data & takes no side, but it has to be verifiable data.
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).