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Quick Overview:
-Seasoned testifying expert witness with litigation experience (patent, copyright, trade secret, class action), skilled at explaining complex ideas to attorneys and juries.
-Several decades of involvement in software, digital audio, digital music, digital signal processing, and processor architecture.
-Successful independent software consultant in high-level languages and assembly language.
-Stanford Ph.D.
-Former Fulbright Scholar.
-Prolific author.
-Experienced manager with long-range research and development experience.
-Facile with foreign languages and working with people from outside the USA.

He is fluent in various dialects of C and C++ including ANSI C. He has programmed in C and C++, under Unix and Windows, for various projects since 1985. He has analyzed source code (C/C++, assembly language) for infringement.

He has written in assembly language for a variety of processors: PDP-10; PDP-11; Motorola 56000 family (56000, 56001, 56300); various Texas Instruments TMS 320 family members; Analog Devices ADSP 2100 family, 2115, Sharc and TigerSharc; Hitachi SH-DSP, SH3-DSP, SH-4, and SH-5; ARM; MIPs; some custom VLIW processors; some extensible architectures such as Tensilica and Stretch; the Atari Jaguar; various other RISC processors. He can read and modify Pentium assembler and machine code. He learns new architectures and assembly languages very quickly. He is considered to be a world-class expert in optimizing and unscrambling assembly language and using machine language. He has completed projects involving up to 30,000 lines of assembly language. He has published articles on assembly language coding and taught seminars on the subject.

Expert is also an accomplished programmer with emphasis in signal processing (recording, modifying, compressing, transmitting signals such as MP3 or MPEG video). He has worked in high-level languages such as C, C++, and Java as well as in low-level assembly language for digital signal processors. He also works with other languages such as Javascript, HTML, XML, and SQL. Expert draws on experience gathered with mobile devices, embedded processors, personal computers, microcomputers, mini computers, and mainframes (punched cards).

He has worked with digital and analog audio and music since the 1970s.

He has worked extensively with MPEG audio including MP3 (MPEG-1/2 Layer 3); AAC; AC-3 (Dolby Digital); has taught and has knowledge of other algorithms. He knows people in the field in the USA and abroad, especially Germany (he speaks German and has read their dissertations in the German original). He owns and has studied the standards, has implemented the algorithms in software (C, C++, assembly), has knowledge of some patents in the field, and has analyzed software for infringement, has testified in Federal Court in a patent case in this field. He has a large collection of literature from the field in his library. He taught a course for four years on this topic at the University of Colorado, Denver. He has given introductory seminars on this topic lasting from two hours to a full day.

As an assembly language programmer he works with bits, hex, binary, and octal numbers all the time.

He has conducted research including his own doctoral dissertation at Stanford; written software; and written extensively (books and articles) about computer music and digital audio since the 1970's. Extensive personal knowledge of the field. Extensive personal contacts (industry and academic) in the USA and abroad (Europe, Japan). Private library of material dating back to the 1970's. Extensive experience in prior art searches in this area. Taught summer courses (Stanford) and given other introductory lectures in the field.

He has extensive knowledge of digital signal processing for audio. He has programmed sound synthesis techniques; windows; the Fourier transform; the discrete cosine transform; some filters; reverberation; audio dynamics compression; pitch shift; sample rate conversion. He has working knowledge of Matlab. See also assembly language, C/C++, computer music entries.

In the 1970's and 1980's he programmed extensively in Fortran for classwork and as an industry consultant. He can analyze Fortran source code for infringement.

He has solid theoretical knowledge of the Fourier transform. He used the Fourier transform in his PhD dissertation at Stanford. He has programmed the Fourier transform in C, C++, and assembly language. He has experience with optimizing the Fourier transform. He has taught the Fourier transform (and the related discrete cosine transform) in introductory lectures.

He is functionally bilingual in German. He can read German-language documents (almost always without a dictionary). He can participate in meetings and conduct phone calls in German with German-speaking natives. He has written German-English translations, some of which were published. He has analyzed German-language documents and patents. He can work easily with the European and German patent web sites. He has testified about and been deposed on German language documents in Federal court in a patent case. He can readily read French and Dutch documents.

He has extensive theoretical knowledge if the (forward and inverse) discrete cosine transform, especially as used in audio. He has taught the discrete cosine transform in introductory lectures. He has programmed the DCT. He maintains an extensive library of articles on the DCT. He has personal contacts to some of the current researchers in the field. This is the math kernel for audio compression such as MPEG, AAC, and AC-3.

He knows this specification. He has programmed this specification; he is an honorary member of the Midi Manufacturers Association. He has extensive personal contacts among manufacturers who use this standard.

He has extensive experience with various forms of compression. He uses the binary number system in his programming work regularly. He writes source code and analyzes large bodies of source code for infringement (Windows programs, network downloading, digital camera, video games, cell phones). He has worked with wavetable synthesis since the days of mainframes and punched cards.

Working closely with Verance R&D staff, implement the Verance Content Management System/Audio-Visual (VCMS/AV) watermarking technology for motion picture sound in Motorola 56300 assembler in the TC Electronics M6000 environment. In use in major film studies starting early 2005. Travel at client's request to TC Electronics headquarters in Denmark to facilitate integration. Provide and supervise a subcontractor to assist with filter design, filter implementation, and other tasks. More than 30,000+ lines of 56K assembler source, several hundred pages of documentation, a dozen CD-ROMs of debugging data and lab notebooks.For this well-known manufacturer of audio plugins, port two audio processing algorithms (Pultec filter, LN1176 stereo compressor) from C/C++ to Motorola 563xx assembler in the DigiDesign ProTools TDM environment, including numerical approximation and streamlining the original C/C++ implementation. Publicly released 2004. Contribute extensively also to port of an extremely complicated high-end reverberator, and to another equalizer.For this software configurable processor startup, study how to port MPEG-2 AAC and MP-3 decode reference C++ code to 16- and 32-bit integerized C. Do the same for MP-3 encode based on publicly available source. Learn their software configurable architecture well enough to write optimizations.After an on-site visit to learn more about the technology and meet the team, Expert made recommendations on changes to architecture for a new version of an idiosyncratic signal processing chip. He also provided code examples for the new architecture.Audio Precision (Portland, Oregon). For their System 2 audio measurement device, developed double-precision FFT in assembler for Motorola 56002, including (Microsoft) C code to study where to maintain double-precision. Also, extensive code for AES/EBU and square wave measurement test suite, including jitter and eye pattern (assembling bit map for display in 56002 data memory space). 28K+ lines of assembler source. 1998-1999: Revise Audio Precision System 2 code for new 96 kHz Cascade hardware (Motorola 56303).