Signal Processing Expert Witnesses

What is a signal processing expert witness?

Signal processing expert witness candidates typically have an advanced degree and expertise in the analysis and manipulation of signals (such as sound, images, and electrical signals) and extensive experience in electrical engineering, computer engineering, or computer science. Digital signal processing (DSP) experts have specialized knowledge of signal processing using digital technology and algorithms to process signals. Expert witnesses should have a deep understanding not only of signal processing technology, but also of the industry, market size, market share, market dynamics, market growth, market trends, and competitive landscape. Signal processing experts may belong to a variety of organizations and associations depending on their specific area of expertise including the Institute of Electrical and Electronics Engineers (IEEE), the international Association for Pattern Recognition (IAPR), the International Association of Acoustics, Speech, and Signal Processing (IEEE-CASS), and/or the Signal Processing and Data Analysis (SPDA) section of the Society for Industrial and Applied Mathematics (SIAM).

What types of cases require a signal processing expert witness?

A signal processing expert witness could provide expertise in intellectual property matters, such as a patent litigation in federal court or a trade secret dispute. It could be a patent infringement case in the District Court, an Inter Partes Review (IPR) in the PTAB (where the only expert testimony is through a deposition), or a patent case or proceeding in the International Trade Commission (ITC). An expert in signal processing technology might also provide testimony in a torts matter such as product liability. 

Signal processing techniques are used in a wide range of applications including telecommunications, audio and video processing, and medical imaging. Cases utilizing signal processing expert witnesses involve the analysis and interpretation of signal processing data, the design and implementation of signal processing algorithms, and/or intellectual property matters (such as patent litigation or trade secret disputes). Cahn Litigation has worked on sourcing experts for numerous legal proceedings involving:

• audio signal processing (manipulation of audio signals)
• field programmable gate arrays (FPGA) device technology
• machine learning
• video processing
• image processing
• speech recognition (e.g., for robots or controlling digital consumer devices)
• integrated circuits
• embedded systems (e.g., microcontroller)
• wireless communication
• telecommunication systems
• control systems

What litigation support work might a signal processing expert witness be expected to perform?

Litigation support by a signal processing expert witness could include forensic investigations, reverse engineering, failure analyses, research and authoring expert reports, providing expert opinions, and courtroom testimony. An expert in digital signal processing technology might also provide testimony in a torts matter such as product liability. Clients may also seek an industry expert for pre-litigation consultant work. In a high-profile case, or litigation involving a significant financial stake, a law firm may request a testifying expert with prior expert witness testimony experience.

An expert witness needs to possess the ability to explain technology and evidence to lay people, such as a judge or juror.

Cahn Litigation Services has the experience required to turn a search for a signal processing expert witness around quickly, providing the right balance of expertise and testimony experience.

Related Disciplines

Signal Processing Expert Witness - Representative Bios

Please Note: All Cahn Litigation expert witness searches are customized to attorneys' precise specifications and preferences. Attorneys are encouraged to discuss search parameters with a Cahn search specialist.

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The below expert witness bios represent a small fraction of those Signal Processing experts known by Cahn Litigation Services. These bios are provided to give lawyers a sense of the Signal Processing landscape.

• Expert Witness #216755

  This expert is a Professor in the Department of Electrical and Computer Engineering and Director of s Laboratory for Image and Video Engineering. This expert is well known as the inventor or co-inventor of many technologies related in the the fields of image and video processing, digital television, computational vision, and modeling of biological visual perception. This expert has published over 800 technical articles in these areas and holds several U.S. patents. This expert's publications have been cited more than 50,000 times in literature with an H-index over 80, and this expert is listed as a Highly-Cited Researcher by Thompson Reuters, indicating one of the top 1% of most cited researchers within the field of Engineering. This expert is also the author of two books on Image and Video Processing, and two books on Image Quality. This expert has received an Award for work on the development of prediction models which have become standard tools in broadcast and postproduction houses throughout the television industry. This expert has also received a number of major awards from the IEEE Signal Processing Society, as well as many other industry organizations and academia. This expert is a registered Professional Engineer and is a frequent consultant to legal, industrial and academic institutions.

  
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• Expert Witness #249795

  This expert is Director of Biomedical Informatics and Biomedical Signal and Image Processing, Director of a State Center for Integrative Research in Critical Care (M-CIRCC) Biosignal-Image and Computational (BIC) Core program, and an Associate Professor at departments of Computational Medicine and Bioinformatics, and Emergency Medicine at a State University. This expert holds a Ph.D. in Electrical and Computer Engineering, an M.Sc in Biomedical Engineering, and a B.Sc. in Electrical Engineering. The focus of this expert's research is on the design of signal/image processing and machine learning methods to create computer-assisted clinical decision support systems that improve patient care and reduce the costs of healthcare. This expert's lab also designs sensors to collect and analyze physiological signals and images. In particular, this expert's research focuses on creating decision support systems to manage traumatic brain injuries, traumatic pelvic/abdominal injuries and hemorrhagic shock, cardiac arrest and other critical care states. Some of this expert's research and technologies have been applied directly in dental situations. This expert's research has been funded by agencies such as the National Science Foundation and Department of Defense. This expert is also a member of the editorial board of many journals and serves as the guest editor of special issues for several journals in the field. This expert has over 150 peer-reviewed journal and conference publications including a highly referenced textbook in the field of biomedical signal and image processing.

  
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• Expert Witness #250300

  This expert received a Ph.D in Electrical Engineering. Having worked as assistant, associate, and full professor in Electrical and Computer Engineering, this expert currently holds an Endowed Chair as Professor in Electrical and Computer Engineering. Specializing in cognitive radio networks, efficiency of wireless networks and systems, communication system design and signal processing, and design synergy between hardware and system software, this expert's current research interests focus on data driven large-scale information analysis and system design, distributed signal processing, data driven wireless system design, and cognitive network optimization. This expert is an active member of IEEE.

  
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• Expert Witness #261795

  This expert is a Professor Emeritus of Digital Signal Processing. This expert received S.B. (Bachelor's), S.M. (Master's), E.E. (Professional Engineer's), and Sc.D. (Doctorate) degrees, all in Electrical Engineering and Computer Science. During graduate work, this expert was supported by a fellowship for research in hearing prostheses, and corporate sponsorship for the development of real- time automatic speech recognition systems. This expert is a member of the Acoustical Society of America, and is a Fellow of the Institute of Electrical and Electronics Engineers (IEEE). This expert has been a member of the IEEE Speech Technical Committee. This expert is also founder and director a speech technology company. This expert's current research interests involve digital processing of speech signals. This is concerned with such problems as the application of digital speech technology to sensory aids for the hearing impaired and automatic recognition of speech in adverse conditions. Some of the interesting problems arising from these applications include enhancement of speech in noise, formulation of robust perceptual distance measures, and real-time implementation. This expert also does work in efficient coding of speech signals, auditory modeling for improved speech analysis, speech production modeling, general digital signal processing, and pattern recognition.

  -  This expert has been working in the field of computer processing of speech for many years and been an active consultant, inventor, entrepreneur, and teacher.

  -  This expert started work on speech-to-text on with a startup.

  -  This expert actively worked on speech-to-text commercially as a consultant, developing automated dictation transcription technology.

  -  This expert founded a speech technology company that provided high-speed automated indexing and searching of voice. One product that was developed automatically aligned closed captioning with audio.

  -  This expert was actively engaged in research focused on speech-to-text.

  -  This expert is a named inventor on ten granted US patents all dealing with speech processing.

  -  This expert has published nearly 200 peer reviewed articles, primarily concerned with speech processing.
  
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• Expert Witness #263706

  This expert has intimate knowledge and experience in developing signal flows and protocols starting within the image sensor, through the image processor and to various video outputs, including camera throughput at multiple resolutions for preview and further processing, streaming, etc. This expert has been engaged as an expert on an IPR case, has been deposed multiple times, and has written many expert reports, rebuttals, and claim constructions.

  In addition to leading technology development at a software development company and at this expert's start-up company, this expert worked with image signal processing (ISP) engineers at many of the industry's major players; in some cases the interactions were with multiple divisions such as professional camera, consumer camera, and automotive. The various applications this expert supported include professional and consumer video cameras, various digital consumer cameras, security and surveillance, and for automotive. This required management of multiple video streams starting at the image sensor, through color and sparse pixel processing in the sensor and the supporting image signal processor, to implementation of control signals and signal readout per custom and MIPI standards, adjustment of image capture settings, and handling of video and still image content throughout the various image capture systems. This expert is up to date on recent advancements targeted for multi-camera smartphones. This expert has a patent pending which leverages the additional layers within stacked image sensors for in-sensor image signal processing. This expert has authored 150 publications, and holds 41 patents in the general field of imaging sensors.

  
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• Expert Witness #263741

  This expert has extensive experience in the fields of electrical and computer engineering. This expert's areas of expertise include signal/image/video processing and analysis, communication systems, microprocessor systems, biomedical data analysis, electric circuits, and related software development - and the subject matter of dual streaming video is well within this expert's area of expertise. This expert holds a PhD in electrical engineering.

  This expert is a faculty member in the Dept. of Electrical and Computer Engineering and Director of a Signal and Image Laboratory. This expert's research includes signal-image-video processing and analysis, with particular emphasis on automated image analysis. This expert regularly teaches courses in Digital Signal Processing, Digital Image Processing, Digital Image Analysis and Circuit Theory.

  This expert served as Co-Director of a multi-university research center on communication circuits and systems. In addition to more than 150 publications in the field, this expert has been very active in professional activities as a Senior Member of the Institute of Electrical and Electronics Engineers (IEEE) Signal Processing Society.

  This expert has been involved in the IEEE Southwest Symp. on Image Analysis and Interpretation (SSIAI). In addition, this expert served on the IEEE Signal Processing Society Technical Committee on Image, Video, and Multidimensional Signal Processing. This expert was involved in an IEEE Intl. Conf. on Image Processing (ICIP), as well as positions on numerous other professional committees.

  This expert has extensive expert witness experience including being deposed and testifying at the ITC, for IPRs and in District Court.

  
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• Expert Witness #216763

  This expert holds a Ph.D. in electrical engineering. This expert joined the faculty of a department of electrical engineering, where this expert is a Professor. This expert also has a concurrent appointment as a Professor of computer science and engineering. This expert served as an associate editor for the IEEE Transactions on Image Processing, the IEEE Transactions on Circuits and Systems for Video Technology and the Journal of Electronic Imaging, and as chair, co-chair and on the advisory committees of several conferences on image and signal processing. This expert's research interests include image and video processing, restoration, compression and enhancement. This expert has published nearly two hundred papers and contributed to seven books in these areas. This expert has extensive litigation experience has been deposed and/or testified on a number of digital signal and imaging related cases.

  
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• Expert Witness #225732

  This expert is a Ph.D. and former Fulbright Scholar with many years of involvement in digital audio, digital music, digital signal processing and processor architecture. This expert is a successful independent consultant and assists in high-level languages and assembly language used for audio and music software and signal processing.

  This expert has many years involvement in hi-tech litigation including patents, copyright, trade secret, and class action. This expert has 17 depositions, 3 times testifying at trial, 5 sets of IPR declarations covering topics such as:

  cell phones, mobile devices, handheld devices (e.g. medical), computers, laptops

  user interfaces

  processor architecture

  file downloading, file streaming, client/server

  media: audio, music, speech, video

  digital signal processing, mathematics, algorithms

  software and source code (C, C++, Java, HTML, XML, Javascript)

  This expert specializes in litigation involving cell phones, car stereos, software, media streaming, mathematics, and user interfaces. This expert has been involved in matters that have specifically dealt with cell phones interacting with automobile head units.

  
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• Expert Witness #226411

  This expert holds a PhD in Electrical Engineering and is a Licensed Professional Electrical Engineer with particular expertise in Mixed-Signal Integrated Circuits. This expert’s experience and skills bridge the gap between the methodologies used by the digital, analog and radio frequency circuit design teams. This expert specializes in integrated circuits (silicon chips) used for signal-processing which:

  Detect signals from a sensor (e.g. antenna, microphone, pixel, thermocouple and so forth)

  Amplify, filter, then convert the signal to the digital domain

  Perform further processing in the digital domain

  Convert the result back to the analog domain for further processing, and/or

  Deliver the final output to an actuator
  

  Examples of these systems are

  Telephones, mobile phones and cell phones

  Data recording and retrieving systems for magnetic media such as disk drives or magnetic tape

  Radio transmitters/receivers and their building blocks such as low noise amplifiers, filters, automatic gain control and frequency mixers (down-converters, up-converters)

  Audio amplifiers

  Audio recording/reproduction systems

  Heat, ventilation and air conditioning controllers

  Data transmitting/receiving systems such as serializer/de-serializers (SERDES)

  Specialties:

  Behavioral modeling of analog/mixed-signal circuits using Verilog-AMS, VHDL-AMS or MATLAB/Simulink, emphasizing multiple model views targeted towards

  Specific verification requirements

  High-speed verification using real-value modeling techniques

  System-level design exploration

  Executable design specs

  Synthesizable block diagrams using MATLAB/Simulink/HDL-Coder

  Expert Witness in the areas of Mixed Signal ICs, Patents, Patent Infringement, Patent Litigation, Intellectual Property (IP), Electro-mechanical system forensic investigations.

  
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