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.
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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert 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.
Start Signal Processing Expert SearchExpert Witness #209097
This USB/signal processing expert has over 30 years of experience in computer science and EE applications, including embedded systems, network device interfaces, peripheral interface drivers, wired and wireless protocols such as Wi-Fi and Bluetooth, and USB.
This expert's application experience includes USB bridges and dual-role or multi-host USB hubs for automotive smartphone-integration systems connected to automobile head units. This expert has served in over 60 patent cases, including over 10 cases involving peripheral communications and USB protocols.
This expert has performed extensive analysis of multi-host USB hub technology for automotive systems, including protocol capture and interpretation of signal processing using a logic analyzer in a live vehicle and head unit.
Start Signal Processing Expert SearchExpert Witness #214804
This audio signal processing expert holds a Ph.D. and has over 50 years of experience in signal processing, with a focus on audiovisual communications. This expert began a research career in an acoustics research department at a prominent industrial laboratory, then became the founding director of several research groups focused on signal processing, advanced audio technology, and multimedia communications.
For personal research and leadership in the field, this expert has received numerous major awards from prominent professional engineering and innovation organizations. As one example of impact, research in this expert's department led to the concept and implementation of the MP3 audio codec for low-bit-rate audio. In an academic career, this expert created a graduate-level course in multimedia communications with an extensive section on speech and audio technology and taught it for many years at prestigious universities.
In recent work, this expert has provided expert opinions on the current generation of audio communications systems, such as microphone and speaker arrays and frequency-space-and-context analyses that enable speech enhancement and voice commands in noisy wireless environments.
This expert is an experienced expert witness and litigation consultant.
Start Signal Processing Expert SearchExpert Witness #217104
This digital image processing expert holds a Ph.D. and is an academic professor specializing in digital video processing within electrical engineering and computer science. This expert earned a doctorate in Electrical and Computer Engineering from a prestigious university and has held leadership and research roles in university multimedia communications and signal/image research laboratories.
Research specialties include signal processing, image and video analysis, video retrieval and communications, multimedia systems, computer vision, medical imaging, and genomic signal processing. This expert has received substantial research funding, served on a standards technical panel in multimedia systems, and held a senior leadership role at a multimedia systems company.
This expert is an experienced expert witness and litigation consultant. The holder of several patents in areas including multiple-item tracking and object tracking, this expert has provided consulting and expert witness services in numerous matters nationwide.
Start Signal Processing Expert SearchExpert Witness #239333
This audio/video coding expert is a professor at a leading university with expertise in video and audio coding technologies, including extensive work involving the H.264/AVC standard, as well as multiplexing and demultiplexing of video and audio.
Current research areas include information theory, signal compression, source-channel coding, video/audio coding and processing, pattern recognition, and nonconvex optimization. This expert holds several patents and has litigation experience related to audio and video coding. This expert is active in a prominent professional engineering association, including journal editing, with specialization in speech, image, video, and signal processing.
Start Signal Processing Expert SearchExpert Witness #249619
This wireless communications expert holds a PhD and is a Professor at a public research university. This expert has extensive experience in the evaluation of engineering technology, patents, intellectual property, wireless system communication networks, and information technology. Technical expertise includes wireless communications, computer engineering, software systems including C/C++, assembler, Python, and MATLAB, system design involving Wi-Fi, cellular systems, computer systems, and networks, signal processing, telecommunications, 5G systems, cellular core networks, cellular evolution including 2G, 3G, and 4G, future-G/6G, Internet of Things (IoT), OSI, and satellite communications. This perspective applies theory, practical considerations, system architecture design, industrial development, and R&D technology perspectives.
This expert was previously a member of a 3GPP Radio Access Network (RAN) industry group and has developed extensive expertise in 3GPP Long Term Evolution (4G), 3GPP New Radio (5G), and beyond 5G technologies. Wireless base station transceivers are often denoted RAN, and standards-based RAN technologies are denoted Open-RAN. Since joining academia, this expert has served as a Principal Investigator in 5G core security, 5G telemedicine, and FutureG applied research for a defense-related research program. This expert has extensive experience in professional evaluation of telecommunications systems, engineering technology, patents, intellectual property, wireless system communication networks, and information technology.
Technical expertise includes wireless communications, computer engineering, software systems including C/C++, assembler, Python, and MATLAB, system design involving Wi-Fi, cellular systems, computer systems, and networks, signal processing, telecommunications, 5G systems, cellular core networks, cellular evolution including 4G, 5G, and 6G, Internet of Things (IoT), computer and network security, OSI, satellite communications, and GNSS/GPS. This perspective applies theory, practical considerations, system architecture design, industrial development, and R&D technology perspectives. Areas of expertise also include downlink/uplink orthogonal frequency-division multiple access (OFDMA), mobile handset positioning, 5G core network functions, network slicing, MANO, SMO, NFV, 5G radio access networks with O-RAN, RU/CU/DU, MIMO, Massive MIMO, synchronization, channels, signal processing, communication protocols, handoff, and error correction.
This expert has expertise in Remote Radio Unit (RRU) and Radio Unit (RU) technology defined by industry standards associated with Open RAN and O-RAN standards. The RRU terminology refers to the low portion of the Physical Layer of the Open System Interconnect (OSI) network layer model and is generally associated with the 5G O-RAN data link, including CU, DU, and RU. Open transceiver interfaces and interoperability standards for O-RAN have been defined by a 5G industry consortium standards group. Radio Units or RUs adopting O-RAN are denoted as O-RUs. Generally implemented on Software Defined Radio (SDR), the Radio Unit (RU) SDR topic involves a significant signal processing platform in the low portion of the Physical Layer. SDR significantly impacts system performance and power consumption of the RU.
This expert has taught 5G/6G wireless communication, computer security, and network security at a university, delivered tutorials on 5G and 6G network security, and served as Principal Investigator in 5G core security for a defense-related research program. Extensive publications on wireless security at international wireless conferences and prestigious IEEE journals further support this expert's credibility in the field.
This expert is an experienced expert witness and litigation consultant.
Start Signal Processing Expert SearchExpert Witness #250542
This LiDAR technology expert holds a PhD and has accumulated broad, in-depth knowledge and experience in the theory, system analysis, design, and build of optics, lasers, diode lasers, photodetectors, opto-mechanical systems, electrical systems, and electronics hardware associated with LiDAR systems operating at infrared to UV wavelengths.
This expert also has substantial experience in atmospheric physics, algorithm development, signal processing, and analysis of LiDAR systems. This expert's experience includes designing and building receiver detectors, transceiver optics, associated electronics, and gas, solid-state, and diode laser transmitters.
This expert has fabricated a range of photodetectors using III-V, II-VI, and silicon materials, is well-published, and has strong expert witness experience.
Start Signal Processing Expert SearchExpert Witness #276578
This facial recognition and identification expert holds a Ph.D. in Electrical and Computer Engineering and is a pioneer, leader, innovator, and authority in biometrics identification, with a strong background in facial recognition technology and over 100 scientific publications and patents in the field.
This expert has contributed to commercial products and solutions for the facial recognition market, including surveillance video processing for face detection in video. This expert also helped develop industry standards for face recognition products and solutions, image quality, standard signal requirements and parameters, and data type and element definitions and requirements.
This expert has experience as an expert witness and litigation consultant.
Start Signal Processing Expert SearchExpert Witness #280070
This acoustical engineering expert holds a Ph.D. in Computer Audio from a prestigious California university, with emphases in psychoacoustics, digital signal processing, and acoustic engineering.
Through work as a research scientist at a prominent federal research center, this expert has extensive applied experience in speech enhancement, signal analysis, and auditory perception. This includes over 1,000 forensic cases and decades of research in speech intelligibility, spatial hearing, and communication systems. This expert also has strong understanding of user-centered audio features through work in human factors, auditory performance, and perceptual optimization. This expert's experience in speech intelligibility supports work involving sound enhancement for hearing-impaired listeners.
This expert is an experienced expert witness and litigation consultant.
Start Signal Processing Expert SearchExpert Witness #280158
This perceptual audio codecs expert has been a professor for more than 45 years, teaching digital signal processing, speech processing, auditory perception, acoustics, and related topics. This expert's research has centered on robust automatic speech recognition and related technologies. This expert is a Fellow of prominent professional societies in electrical engineering, acoustics, and speech communication, and served for a number of years as a distinguished lecturer for a leading speech communication association. This expert has worked extensively on a wide variety of problems related to speech processing, as well as a smaller variety of problems related to audio processing.
This expert has advised attorneys on patent litigation issues for over 20 years, has been deposed numerous times, and has testified before the U.S. Patent and Trademark Office and in federal court in the Eastern District of Texas.
Start Signal Processing Expert SearchExpert Witness #289371
This USB/signal processing expert has developed several consumer electronics products incorporating USB interfaces, featuring both host and device USB ports. This expert is also familiar with OTG functionality, has written firmware for USB devices, and has designed circuits, including schematics and layouts, incorporating USB interfaces.
This expert has developed hardware and software for real-time signal processing. This expert holds an MSc in Computer Science from a university and an MA/MST from a prestigious university, and is an experienced expert witness.
Start Signal Processing Expert SearchExpert Witness #295302
This image processing expert holds a Ph.D. in Optical Sciences from a university and has over 25 years of R&D experience in imaging science, along with broad patent expertise. This expert holds over 10 patents as an inventor and has over 10 years of experience supporting patent lawyers in patent litigation.
This expert has experience with image processing, image enhancement, optical projection, illumination, and using image processing to correct imperfections in illumination and projection systems. Expertise includes computational imaging, Digital Signal Processing, Optics, designing image processing algorithms to complement or address hardware and optical challenges, digital filters, multi-scale retinex processing, handheld projection devices, and specialized illumination and projection patterns for imaging tools.
This expert has served in a senior research and development role at an imaging company and is a published first author on over 10 journal papers in imaging and image processing. This expert is also an experienced expert witness and litigation consultant.
Start Signal Processing Expert SearchExpert Witness #301095
This code review/natural language processing expert profile includes two Bay-area experts with experience supporting preliminary code review processes and expertise in technologies related to patent litigation.
This expert is experienced in targeted advertising through work with a digital advertising company that later became part of a larger data-marketing division.
This expert has a background as a former NLP (Natural Language Processing) teaching assistant at a prestigious university's school of information, has published research through a prominent engineering professional association on deepfake speech detection, and has worked on classical and neural ASR models. This expert's background bridges speech recognition, NLP, and applied audio signal processing for forensic and commercial applications.
Both experts have experience as expert witnesses and litigation consultants.
Start Signal Processing Expert SearchExpert Witness #301654
This smart wearables expert holds a Ph.D. and co-directs university-based research centers focused on wearable sensors and power management integration, with work focused on the design of wearable devices.
This expert's primary area of expertise is hardware design, including instrumentation amplifiers and analog front-ends, analog-to-digital converters, and decimation filters. This expert also has experience with signal processing and software design, though hardware is the main area of expertise.
This expert has published many peer-reviewed papers on sensor interfaces, analog-to-digital converters, wireless transceivers, and related topics, and has led the development of wearable systems, including microphones in hearing aids. This expert has served as an expert witness on many occasions.
Start Signal Processing Expert Search