Expert Details

Expert in Audio, Speech, and Music Digital Signal Processing and Consumer Audio Devices

Expert ID: 731076 California, USA

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Expert received his Ph.D. in Electrical Engineering from Caltech under the direction of J.R. Pierce and went on to become a pioneer in the application of frequency-domain digital signal processing to the analysis and modification of music and speech. Over the course of eleven years as a Research Scientist at U.C., San Diego, he introduced new techniques for computer-based music creation, speech recognition, and research into sound perception. In his subsequent fourteen years at the Creative Advanced Technology Center, he assumed progressively broader responsibility for the continuation and commercialization of his earlier research. As Director of Audio Research, he led the development of innovative DSP solutions for sound spatialization and speech enhancement for products such as sound cards, portable music players, and headphones. In ensuing roles as Director of Engineering, first for Audience and then for Plantronics, he led development of targeted DSP solutions for voice communication products operating in noisy environments. Expert has lectured and written extensively on these topics over the years and holds six patents.

He has worked with the University of Southern California to improve the effectiveness of virtual reality in training scenarios via targeted manipulations of the audio components.He has worked with Analog Devices to develop new audio processing capabilities for selected DSP chips.He has worked with ITT Defense Communications to investigate the feasibility of improved word-spotting utilizing neural-network techniques.He has worked with Mosaic Systems to investigate the feasibility of improved solid-state gas detection using neural-network techniques.He has worked with Hybrid Arts to provide new audio processing capabilities for a digital audio workstation.

Expert may consult nationally and internationally, and is also local to the following cities: San Jose, California - San Francisco, California - Sacramento, California - Oakland, California - Stockton, California - Fremont, California - Modesto, California - Salinas, California - Santa Rosa, California - Hayward, California

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Year Degree Subject Institution
Year: 1983 Degree: PhD Subject: Electrical Engineering Institution: Caltech
Year: 1978 Degree: MS Subject: Electrical Engineering Institution: Caltech
Year: 1976 Degree: BS Subject: Electrical Engineering Institution: Carnegie-Mellon University

Work History

Years Employer Title Department Responsibilities
Years: 2012 to Present Employer: Undisclosed Title: Owner Department: Responsibilities: Consulting on digital audio algorithms and intellectual property.
Years: 2008 to 2012 Employer: Plantronics Title: Director of DSP and Audio Systems Department: Responsibilities: Defined audio DSP strategy and managed audio DSP productization for a worldwide leader in headset solutions. Built and led a team of 10 engineers responsible for DSP algorithms, code implementation across multiple platforms, audio systems design, and audio performance optimization in numerous successful products. Established and managed relationships with third-party technology providers in the USA and abroad.
Years: 2008 to 2008 Employer: Audience Title: Director of Engineering Department: Responsibilities: Responsible for expanding DSP algorithm development for a start-up producing an innovative DSP chip for delivering improved voice quality in mobile communications.
Years: 1994 to 2008 Employer: Creative Technology Title: Director of Audio Research Department: Advanced Technology Center Responsibilities: Built and led a globally distributed team of 25 DSP scientists and engineers in the successful development and productization of key new proprietary audio DSP technologies for PC and CE audio products such as sound cards and headphones. Oversaw development of algorithms and code for sound spatialization, voice communication, and speech and music enhancement.
Years: 1983 to 1994 Employer: University of California, San Diego Title: Research Scientist / Adjunct Lecturer Department: Music and Cognitive Science Responsibilities: Developed a novel neural-network-based speech recognition prototype for implementation on a network of Transputer processors. Developed new audio DSP algorithms and software tools in C for electronic music composition, for digital signal processing, and for music and math education. Performed research in sound perception and in neural network pattern recognition.
Years: 1976 to 1982 Employer: Hughes Aircraft Company Title: Member of Technical Staff Department: Hughes Research Labs Responsibilities: Worked part-time on a variety of signal analysis projects while attending graduate school, including heart sound analysis and circuit simulations.

International Experience

Years Country / Region Summary
Years: 1984 to 1984 Country / Region: France Summary: He consulted for three weeks at IRCAM in Paris on the development of improved digital music processing algorithms and code.

Career Accomplishments

Associations / Societies
He is a Senior Member of the IEEE and a longtime member of the Audio Engineering Society and the Acoustical Society of America.
Publications and Patents Summary
He has 6 patents and 11 publications, including 2 book chapters.

Additional Experience

Expert Witness Experience
He has no formal experience as an expert witness, but he does have extensive experience working with in-house corporate counsel on patent acquisition and infringement matters.
Training / Seminars
He has developed and taught university courses in music synthesis and audio processing. He has also delivered numerous invited talks on related research topics.
Vendor Selection
He has identified, assessed, selected, and managed vendors for proprietary DSP solutions.
Marketing Experience
He has been intimately involved in strategic planning and development of audio-centric products such as headsets and headphones, sound-processing chips, sound cards, and portable music players.
Other Relevant Experience
He has been frequently enlisted for specialized problem-solving in the audio domain with contributions ranging from code development to literature review and strategic guidance.

Fields of Expertise

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