Curriculum Vitae
`John M. Strawn, Ph.D.
`(contact information on last page)
`Professional Profile
`
`
`
` 
`
` S
`
` 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.
`
`Professional Experience
` Systems, Inc. (1992-present; 1986-1988); Owner and Full-time Consultant.
` Testifying Expert witness in patent and copyright litigation relating to software and
`source code, digital devices, processor architecture, media, compression, signal
`processing and client/server interactions. See Expert Witness section, below.
` Programming hand-crafted audio and music software for signal processing, written in
`C, C++, JAVA, and especially assembly language for digital signal processing chips.
`Consulting on processor architecture and networking. See Consulting Assignments,
`below.
`
`
`Yamaha Music Technologies USA; 1989-1991: President; 1987-1989: Vice President.
` Helped establish, and managed, a nine-person Ph.D.-level research group, including site
`search, architectural design, construction, move-in, and hiring.
` Conducted original research on electronic musical instruments, software, user interfaces,
`micromachining, networking, and recent technological developments.
` Extensive experience designing scientific, engineering, and musical object-oriented
`applications, especially C++ (UNIX).
` Research on Yamaha’s Vocaloid started in this group.
` Patent listed below.
`
`
`Lucasfilm/Droid Works (1985-1986); Programmer.
` Full-time programming experience as an employee, designing signal-processing
`modules and writing (96-bit VLIW) microcode for the ASP/SoundDroid developed by
`James A. Moorer.
` Experience in audio and video post-production.
` Extensive work in C (Unix).
` Another six months full-time experience writing tightly packed assembly code for the TI
`
`CV of John Strawn, Ph.D., p. 1, Revised 4/6/2021
`
`IPR PETITION
`US RE48,371
`Amazon Ex. 1008
`
`

`

`TMS32010 signal processor, especially for a two-channel hard-disk audio record
`playback unit that played without bugs on the exhibit floor of the National Association
`of Broadcasters convention, 1986.
`
`
`Stanford University (1976-1985), Doctoral Student.
`Nine years programming experience developing code in high-level languages (Algol,
`Fortran, SAIL) and PDP-10 assembly language for musical and audio signal processing
`applications during doctoral thesis work. My Ph.D. dissertation (Modeling Musical
`Transitions, 1985) involved original published research in spline fitting and pattern
`recognition, a 30,000-line two- and three-dimensional graphical editor for waveforms and
`spectra, implementation (with John Gordon) of the short-time Fourier transform, device
`drivers, and libraries for graphic user interfaces. Also part-time consulting work:
` SRI International (FORTRAN for mechanical engineering).
` Mattel Electronics (music in consumer electronic toys).
`
`IntelliGenetics (ALGOL-like code for biotechnology).
` Digital Keyboards (product specification and complete manuals for GDS and Synergy
`Synthesizers).
`
`
`Revox (1972); Summer intern
`Solder cables, write German- and Dutch-English translations, manufacture PC boards,
`assemble hardware.
`
`
`
`When
`1985
`
`Where
`Stanford
`University
`
`1975-
`1976
`
`1973-
`1975
`
`IBM
`Thomas
`Watson
`Foundation
`Technical
`University,
`Berlin
`
`1968-
`1973
`
`Oberlin
`
`
`Education and Training
`
`Degree
`Ph.D., CCRMA. Advisor: John Chowning. Graduate course work in
`music, computer and processor architecture, high-level and assembly-
`language programming, digital audio, digital signal processing,
`acoustics, psychoacoustics, and digital hardware. Dissertation on analysis
`of music instruments with the short-time Fourier transform. Software
`development experience listed elsewhere in this resume.
`Grant to study electronic music, Tokyo, Japan, 1976. Live performances
`on piano and Roland System 700 analog synthesizer. Also travel through
`Turkey, Iran, Afghanistan, Pakistan, India, Thailand, and Hong Kong.
`
`Fulbright Scholar. Graduate-level coursework in music theory/history,
`audio engineering, electronics, information theory, cybernetics, Japanese;
`all coursework in German. Extensive recording studio and live concert
`sound reinforcement experience. PDP-11 and PDP-8 assembly and
`machine language. Travel throughout Europe.
`B. Mus, double degree in organ performance and music theory.
`Programming in BASIC, FORTRAN, MUSIC V on an IBM 360
`mainframe. Experience with analog synthesizers and digital music
`synthesis, Exchange semester, University of Hamburg, Germany, 1971,
`course work in German literature and psychology.
`
`
`CV of John Strawn, Ph.D., p. 2, Revised 4/6/2021
`
`

`

`Expertise
`
` 
`
`
`
`
`
`
`Seasoned testifying expert witness with litigation experience (patent, copyright, trade secret,
`class action), skilled at explaining complex ideas to attorneys and juries.
`
`Software analysis for litigation including patent, copyright, trade secret, software theft.
` Assembler, object-oriented, C, C++, HTML, XML, Java, Javascript, SQL.
`
`Implement/optimize signal processing algorithms: Fourier transform (FFT), discrete cosine
`transform (DCT), DTMF, speech synthesis.
`Port/optimize audio compression algorithms: AC-3, MP-3, AAC.
`Implement audio algorithms: reverberator, pitch shifter, sample rate converter, compressor,
`filter, flanger, 3-d audio (Dolby surround), dither.
`
`Implement music synthesis (additive, physical modeling, wavetable, FM).
` Create bug-free software from academic signal processing research.
` Work in floating- and fixed-point math.
` Extensive experience optimizing code in assembler
`
`PC, Mac, Unix.
` DSP processor architectures: Motorola 56000, 56300, and 56800 families; TI TMS320C10
`and TMS320C54 family; Code Composer Studio; Analog Devices 21xx family and
`TigerSharc; VLIW; custom processors; I learn new processor architectures quickly.
` Embedded processors: Hitachi SH-DSP, SH3-DSP, SH-4, and SH-5; ARM7/ARM9;
`configurable processors (Tensilica).
`
`Processor architecture.
` Debugging hardware prototypes.
` Media networks, such as AES/EBU (IEC 60958), IEEE-1394/FireWire, AV/C, 61883,
`mLAN, and others.
`
`File downloading.
`
`Practical audio experience in live sound and in studios.
` Functionally bilingual in German; able to read French, Dutch; some Japanese
`
`
`
`Expert Witness and Litigation Support Experience
`
`Summary: 19 depositions to date, 3 times testimony at trial, 10 declarations filed in 17 Inter
`Partes Reviews (IPRs). Patent litigation, ITC investigations, Inter Partes Reviews, USPTO
`declarations, class action litigation, trade secret litigation, copyright litigation involving software.
`Expert reports, declarations, prior art research and analysis, infringement analysis (e.g., analyze
`devices, documents; source code analysis, source code comparison), claim charts, tutorials,
`Markman hearings. Technical areas include software and source code; computers, laptops, cell
`phones, mobile devices, handheld devices (e.g. medical); processor architecture; user interfaces;
`media: audio, music, speech, video; compression (e.g., MPEG, MP3); digital signal processing,
`mathematics, algorithms; file downloading, file streaming, client/server; protocols such as internet
`protocol (IP); video games. Links regarding specific cases are also available online
`(http://www.s-systems-inc.com/hi-tech-litigation-expert-witness/).
`
`
`
`
`CV of John Strawn, Ph.D., p. 3, Revised 4/6/2021
`
`

`

`Testimony at Trial:
`
`Microsoft v. Lucent. Fish Richardson.
`Two days testimony at three-week jury trial, after deposition and seven expert
`reports/declarations on non-infringement, invalidity, inventor not included, defects in
`specification, and secondary considerations. Two patents related to audio compression and
`MP3 in Windows Media Player. Source code analysis (C, C++, assembler, machine code).
`Research. Analysis of German documents including dissertations. The Court ruled for
`Microsoft, finding non infringement on one patent and lack of standing on the other patent, as
`a matter of law, upheld on appeal. (CASD 3-02-cv-2060, CAFC 2007-1546, 2005 – 07).
`
`
`Nice v. Witness. Fish Richardson.
`Telephone call centers (telephony, hardware architecture, digital recording, functionality).
`Expert reports on invalidity and non-infringement, three patents. Deposition, jury trial
`testimony. (DED 1-cv-311, 2007 – 08).
`
`
`Motorola v. Apple. Quinn Emanuel.
`Cell phone GPS. Analyze iPhone and Motorola Droid source code (C, C++, JAVA) and
`schematics. Three expert reports and two witness statements relating to infringement,
`technical prong of domestic industry, and validity. Deposition. Testimony at trial. (ITC 337-
`TA-745, 2011).
`
`
`
`Other Litigation Engagements:
`
`Harris Computer Corporation et al v. DSI Investments et al. English, Lucas, Priest & Owsley.
`Trade secret litigation regarding jail management software. Review source code (e.g.,
`javascript, visual basic, python), GitHub logs, user interfaces, database contents. Expert
`Report. (WDKY 1:19-cv-00142, 2020 - present).
`
`
`GREE v. Supercell. Kilpatrick Townsend & Stockton.
`For GREE, analyze source code (C++, Java) of SuperCell mobile games such as Brawl Stars,
`Clash of Clans, and Clash Royale to determine infringement of five GREE patents. Topics
`included user interfaces, game play, game character capabilities, graphics, and messages
`passed between mobile device and server. Jury verdict September 2020 found damages of
`$8.5 million, and willful infringement. (EDTX 2-19-cv-00070 , 2-19-cv-00071, 2019-2020).
`
`
`Inter Partes reviews (two) for Spotify. Sheppard Mullin.
`Two IPRs. Two patents owned by Excalibur related to fingerprinting audio, involving e.g.
`filtering, power measurements, time sequencing, database storage. First invalidity declaration
`re 19 challenged claims, 132 pages. (PTAB-IPR2020-00421, 2019-2020). Second invalidity
`declaration re 18 challenged claims, 159 pages (PTAB-IPR2020-00422, 2019-2020). Related
`district court case (DDE-1-19-cv-00165) settled 4 months after IPRs were filed, and IPRs were
`terminated before institution decision.
`
`
`Dolby Laboratories Licensing Corp., et al. v. Adobe Inc. King & Spalding.
`Copyright claims regarding audio compression software (AC-3, E-AC-3). Analyze various
`source code collections, standards documents, copyright office filings for software, deposition
`
`CV of John Strawn, Ph.D., p. 4, Revised 4/6/2021
`
`

`

`testimony, technical documentation, object code libraries, and historical Windows
`applications. Expert report, deposition. (CAND-4-18-cv-01553, 2019 – 2020.)
`
`
`Inter Partes review for Panasonic. Orrick.
`IPR. Patent owned by Cellspin Soft related to transferring photographs from a digital camera
`to a cell phone via Bluetooth, and from the cell phone over the Internet to an image publishing
`website. Invalidity declaration re 16 challenged claims, 119 pages; Reply declaration, 32
`pages. Deposition. All challenged claims determined to be unpatentable. (IPR2019-00131,
`2018 – 2020).
`
`Inter Partes review for GoPro (Rimon Law) and Garmin (Erise IP).
`Declaration from Panasonic IPR above also submitted by GoPro and Garmin in separate
`PTAB-IPR2019-01108 (2019 – 2020).
`
`
`JDS Technologies v. Avigilon. Robins Kaplan.
`Analyze source code of both parties (Visual Basic, C++) regarding security camera patents.
`(MIED-2-15-cv-10385, 2018 – 19).
`
`
`Inter Partes reviews for Jaguar Land Rover. Latham Watkins.
`IPR. Patent owned by Blitzsafe related to integrating a portable media device (e.g., cell phone,
`MP3 player) wirelessly (e.g., Bluetooth) with car multimedia system for playback and control.
`Invalidity declaration re 40 challenged claims, 140 pages. (IPR2018-00544). Second patent
`owned by Blitzsafe again related to car multimedia device integration. Research. Invalidity
`declaration re 32 challenged claims, 260 pages. (IPR2018-01203, 2017 – 19).
`
`
`
`Inter Partes review for Daimler (Mercedes). Quinn Emanuel.
`Declaration from first Jaguar IPR above also submitted by Daimler in separate IPR2018-
`01209 (2018 – 19).
`
`
`MONKEYmedia v. Samsung. DLA Piper.
`Several patents relating to playback of interactive multimedia such as popup advertising or the
`movie editor’s comments on Blu-Ray players, settop boxes, televisions, cell phones, laptops.
`Declaration and deposition for Markman. (TXED-2-17-cv-460, 2017 – 18).
`
`
`Atlantic Recording Corp. v. Spinrilla. Lilenfeld PC.
`Analyze Ruby source code for hip hop music web site. Evaluate methods for identifying
`sound recordings. Engaged by defendants accused of copyright infringement. Expert report,
`deposition. (GAND 1-17-cv-431, 2017 – present).
`
`
`Rogue Wave Software v. BTI Systems and Juniper Networks. Katten Muchin Rosenman.
`Analyze Java source code involving graphic user interfaces and remote control of Internet
`hardware. Compare versions of source code. Reconstruct opposing party’s source code from
`obfuscated deposit copy filed with US Copyright Office. Engaged by defendants accused of
`copyright infringement. Two expert reports. (NYSD-1-16-cv-7772, 2017 – 19).
`
`
`Two Inter Partes Reviews for Samsung. Fish Richardson.
`Patent owned by Tivo related to real-time audio/video streaming, recording and playback, and
`DVR (set top box) architecture. Research. Two invalidity declarations re 2 challenged claims,
`
`CV of John Strawn, Ph.D., p. 5, Revised 4/6/2021
`
`

`

`each with separate prior art. (IPR2016-01524, 137 pages; IPR2016-01712, 112 pages).
`Related district court case (TXED-2-15-cv-1503) settled 2 months after 2nd IPR was filed, and
`IPRs were terminated before institution decision. (2016 – 17).
`
`Artemetrx et al. v. Archimedes et al. Coberly Law; Paine Bickers.
`Analyze SQL source code and databases involving pharmaceutical billing, engaged by
`defendants accused of misappropriation of trade secrets. (Davidson County Chancery Court,
`Nashville, TN, Case No. 16-0913-II, 2017).
`
`
`Crest Audio v. QSC Audio Products. Perkins Coie.
`Analysis relating to claim construction and non-infringement for two amplifier patents.
`(MSSD-3-12-cv-755, 2016 – 17).
`
`
`Andrea v. Intervenor Waves (Israel) and Respondent Dell. Denko, Coburn, Lauff.
`Patents related to noise reduction, adaptive filtering, and echo cancellation for speech in
`laptops. Source code analysis (C, C++). Compare versions of source code. Expert report on
`non-infringement, two patents. Deposition. (ITC 337-TA-949, 2015 – 16).
`
`
`Blue Spike v. Texas Instruments, for lead defendant Audible Magic. Orrick.
`Patents related to automatic recognition of video and audio based on signal processing and
`human perception. Source code analysis (C, C++, Visual Basic, SQL, XML). Declaration.
`Two expert reports, one on non-infringement (four patents), one comparing versions of
`source code. Deposition. (TXED 6-12-cv-499, 2014 – 16).
`
`
`Inter Partes Review for Verizon. Wiley Rein.
`Three patents owned by Solocron relating to cell phone ring tones. Research. Invalidity
`declaration re 17 asserted claims, 58 pages. (IPR2015-00349, 00350, 00364, 00376, 00380,
`00383, 00391). Related district court case (TXED-2-13-cv-1059) stayed four months after
`IPR filing, settled 1 month thereafter. IPRs terminated before institution. (2014 – 15).
`
`
`Inter Partes Review for Samsung. Greenberg Traurig.
`Patent owned by B. E Technology related to Internet targeted advertising, user interfaces, and
`client-server interactions. Research. Invalidity declaration (90 pages). Deposition. Two
`asserted claims determined to be unpatentable, upheld on appeal. (IPR2014-00044, CAFC-15-
`1888, 2013 – 16).
`
`
`Adobe v. Wowza. Kirkland & Ellis; Irwin IP; Fliesler Meyer.
`Five patents related to protocols for client/server real-time video and audio streaming. JAVA
`source code analysis. Analysis of media packets and headers down to the bit level, and
`client/server interactions. Deposition related to Markman. Expert report and deposition on
`noninfringement. (CAND 3-11-cv-2243, 2011 – 14).
`
`THAT Corporation. McDermott Will Emery
`Application relating to audio in television. Prosecution had lasted 8 years. Three months after
`my declaration regarding non-obviousness was submitted, US 8,908,872 issued. (2013 – 14).
`
`
`
`
`
`CV of John Strawn, Ph.D., p. 6, Revised 4/6/2021
`
`

`

`
`SmartPhone v. ZTE. Novak Druce.
`Three patents relating to Android cell phone user interface, Internet protocols, client/server
`operations. Source code analysis (C, JAVA, XML). Two expert reports for invalidity and
`non-infringement. Deposition. (EDTX 6:12-cv-350, 2013 – 14).
`
`
`SmartPhone v. LG. Morgan Lewis Bockius
`Two patents relating to Android cell phone user interface, automatic call detection,
`client/server operations. Research. Review cell phone hardware and software architecture.
`Expert report for invalidity citing 14 pieces of prior art. Deposition. (EDTX 6:10-cv-74,
`2012 – 13).
`
`
`SmartSound v. Avid. Quarles Brady.
`Automated composition of sound tracks for video. Source code analysis, two patents (C++,
`XML) regarding infringement. (WIWD 3-12-cv-223, 2011 – 12).
`
`
`LSI v. Vizio. Jones Day.
`Digital memory and MPEG audio. Invalidity and non-infringement analysis for four patents.
`Settled before Markman. (CACD 8:10-cv-1602, 2012).
`
`
`Move v. Real Estate Alliance. Alston Bird.
`Real estate sales website. Source code analysis (JavaScript, HTML, XML, SQL). Two expert
`reports on infringement, two patents. Deposition. (CACD 2-07-cv-2185, 2008 – present).
`
`
`HTC v. Apple. Finnegan Henderson.
`Cell phone user interface, memory, and caller ID. Expert report relating to technical prong of
`domestic industry for 24 HTC Windows Mobile cell phones. Supplemental Expert Report.
`Consulting expert relating to iPhone, iPad, and iPod touch concerning validity and power
`management. (ITC 337-TA-721, 2010 – 11).
`
`
`Fair Isaac v. Actimize and NICE. Robins, Kaplan..
`Credit card scoring. Source code analysis for infringement (C++, Java, XML, scripting
`language). (DED 1-09-cv-688, 2010 – 11).
`
`
`Affinity v. Alpine, JVC Kenwood, et al. Orrick.
`User interface and functionality of car audio, marine audio, and home theater products that
`connect to iPod/iPhone. Expert report on non-infringement, two patents. Deposition.
`(TXED 9-08-cv-171, 2010).
`
`
`In re Apple & ATTM Antitrust Litigation Wolf Haldenstein.
`Analyze iPhone source code for plaintiffs. Expert report and various declarations, in
`particular regarding class certification. Deposition. (CAND 5:07-cv-5152, 2009).
`
`
`TouchTunes v. Rowe et al. McAndrews Held Malloy.
`Patent litigation involving compression, music jukeboxes, song selection. Declaration.
`(NYSD-1-07-cv-11450).
`
`
`
`CV of John Strawn, Ph.D., p. 7, Revised 4/6/2021
`
`

`

`
`Konami v. Harmonix. Paul Hastings.
`Analyze Rock Band video game source code (Playstation 2, PS3, Wii, XBox). Expert reports
`on infringement and validity, three patents. Two-day deposition. (TXED 6-08-cv-286, 2008
`– 10).
`
`
`SanDisk v. LSI. Jones Day.
`Research. Attend tutorial and Markman hearing regarding MP3. (CAND 3:09-cv-2737, 2009
`– 10).
`
`Samsung v. Kodak. Weil Gotshal.
`Digital cameras in cell phones. Analyze Samsung cell phone source code (C, C++) for
`infringement relating to digital cameras. Study baseband chip documentation from
`Qualcomm, Philips, Agere, Texas Instruments; analyze register-level code for camera image
`sensors from Samsung, Sony, Micron, Omnivision; Windows Mobile 5 and 6 device drivers;
`Qualcomm BREW 2 and BREW 3 cell phone OS. Four patents involving Bayer subsampling,
`pixel interpolation; and standard digital optical concepts such as RGB, YUV, YCbCr, EXIF,
`and JPEG. (ITC 337-TA-671, 2009).
`
`
`Voice Domain v. Philips. Finnegan Henderson.
`Declarations for Markman hearing on hand-held consumer devices, three patents. (OKWD 5-
`08-cv-701, 2009).
`
`
`THAT Corporation. McDermott Will & Emery
`Declaration to USPTO involving non-obviousness for audio in television, regarding US
`Patent Application 09/638,245, BTSC Encoder. (2009)
`
`
`Seer Systems v. Yamaha. Morrison Foerster.
`Analyze and provide prior art for music synthesis. (CAND 3-06-cv-7736, 2007).
`
`
`DTL v. Cingular Wireless. Mayer Brown.
`Microphone in cell phones. Research, claim charts, invalidity. (TXED 2-06-cv-156, 2006 –
`07).
`
`
`Health Science Products and Kairos v. Sage. Meyer & Associates, Columbus, Ohio.
`For class action plaintiffs, analyze database software before and after release of ACT 2005.
`(GAND 1-2005-cv-3329, 2007).
`
`
`Digeo v. Audible. Black Lowe Graham.
`Internet file downloading. Source code analysis (C, C++). Apple iPod, Creative MuVo MP3
`player. Three expert reports regarding Markman, validity and infringement. Deposition for
`Markman hearing. (WAWD 2-05-cv-464, 2005 – 06).
`
`
`MediaTek, ASUSTek & ASUS v. Sanyo. Ropes Gray.
`Prepare invalidity claim charts on 24 hour notice. Assist in preparation of tutorial. (TXED 6-
`05-cv-323, 2006).
`
`
`
`CV of John Strawn, Ph.D., p. 8, Revised 4/6/2021
`
`

`

`
`Information Technology Innovation v. Motorola et al.. Wilmer Hale.
`Provide and supervise an expert witness colleague who prepared an expert report on non-
`infringement. (ILND 04-C-7121, 2006).
`
`
`Antor v. Apple, Microsoft, RealNetworks. Weil Gotshal.
`Provide and analyze prior art regarding file downloading. (TXED 2-03-cv320, 2004 – 05).
`
`
`Trop, Pruner & Hu.
`Provide and analyze prior art involving signal processors. (2005).
`
`
`Intergraph v. Dell et al. Robins Kaplan.
`Provide and analyze prior art for hardware architecture, virtual memory and cache memory.
`(TXED 2-02-cv-312, 2003).
`
`
`Lucent vs. Young Chang/Kurzweil. Cesari McKenna.
`Provide and analyze prior art for music synthesis, digital hardware, software, architecture.
`(MAD 1:97-cv-10310, 1997 – 98).
`
`L.C. Concept v. Digital Theater Systems (DTS). Small, Larkin.
`Provide and analyze prior art for cinema sound equipment in USA and Germany. (1994).
`
`
`
`
`Consulting Assignments
`
`Summary: Software in high-level languages (e.g. C, C++, Java, Fortran), assembly language
`(digital signal processors, embedded processors, custom processors), and Matlab, for signal
`processing applications, often related to audio and music. Related projects such as processor
`design, mergers and acquisitions, feasibility studies, and standards work. Links regarding specific
`assignments are also available online (https://www.s-systems-inc.com/dsp-consulting/).
`
`Client: iZotope
`From:
`To:
`Boston
`
`Port iZotope's pitch correction effect from C++ source code to Avid TDM
`environment in Motorola 56000 family assembly language.
`Client: Congruity
`Palo Alto
`For this music industry startup, create audio effects in Motorola/Freescale
`DSPM56364 assembly language. Write and debug code without access to
`hardware, working only with software tools. Initial delivery of code ran
`bug-free in target hardware.
`Client: DTS Digital Cinema (now Datasat Digital Entertainment)
`Location: Agoura Hills, CA
`For DTS Digital Cinema/DataSat's XD20 Media Player eight-track cinema
`media player, port DTS Coherent Acoustics decode (two versions, one 8-
`channel, one stereo), DTS Digital Cinema 8-channel decode, and DTS
`Neo6 5.1 decode from DTS Digital Cinema's existing XD10 cinema media
`
`
`From:
`To:
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`
`From:
`To:
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`2011
`2011
`Duties:
`
`2009
`2009
`Duties:
`
`2008
`2008
`Duties:
`
`CV of John Strawn, Ph.D., p. 9, Revised 4/6/2021
`
`

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`player. Responsible for approximately 25,000 lines of assembly-language
`source.
`
`Client: Berkeley Design Technology, Inc.
`Location: Oakland, CA
`Contribute to research and writing of the following articles on processor
`architecture at BDTI's website Inside DSP (for links see http://www.s-
`systems-inc.com/dsp-consulting):
`
` 
`
` TI Offers OMAP3 Application Processors to the Mass Market
` Avnera releases ASSPs for wireless audio applications
` XMOS Introduces Low-cost Multi-core Chip Family with
`Programmable I/O
` VeriSilicon’s New Silicon IP Solution for HD Audio
` Behind the scenes: Dolby’s acquisition of Coding Technologies
` Tips and Tricks for Debugging Audio
`Other BDTI assignments are listed below.
`
`
`Client: Yamaha
`Location: Hamamatsu, Japan
`Chair, AES standards working group SC-02-12 on digital audio
`networking via IEEE-1394 (Firewire), with the support of Yamaha.
`Involved a trip to AES conventions twice a year, including one in Europe.
`Past member, IEC TC100 TA4, Digital System Interfaces. Various public
`appearances worldwide and various company site visits to discuss
`multimedia networking, audio over 1394 and Yamaha’s mLAN.
`Client: Sonic Network (now SoniVox)
`Location: Somerville, MA
`For this well-known provider of wavetables, synthesis software, and cell
`phone ring tones (among others), provide and supervise subcontractors for
`these projects:
` Design and implementation of filters for sample rate conversion;
` Design and implementation of filters following the DLS-2 specification
`(used in cell phones for ring tones);
` Port synthesizer code to Tensilica HiFi2 audio engine.
`
`
`From:
`To:
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`2007
`2008
`Duties:
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`From:
`To:
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`1995
`2007
`Duties:
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`From:
`To:
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`2005
`2006
`Duties:
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`From:
`To:
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`From:
`To:
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`2005
`2005
`Duties:
`
`Client: Audio Research Labs
`Location: Scotch Plains, NJ
`For ARL founder Schuyler Quackenbush provide and supervise a
`subcontractor to design and implement a digital filter algorithm in
`Motorola 56K assembly language.
`
`Client: Verance
`2004
`Location: San Diego, CA
`2005
`Duties: Working closely with Verance R&D staff, implement the Verance Content
`Management System/Audio-Visual (VCMS/AV) watermarking technology
`
`CV of John Strawn, Ph.D., p. 10, Revised 4/6/2021
`
`

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`From:
`To:
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`From:
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`2004
`2006
`Duties:
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`2002
`2004
`Duties:
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`From:
`To:
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`2003
`2004
`Duties:
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`From:
`To:
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`From:
`To:
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`From:
`To:
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`2003
`2003
`Duties:
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`2003
`2003
`Duties:
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`2002
`2003
`Duties:
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`for motion picture sound (now known as Cinavia) in Motorola 56300
`assembler in the TC Electronics M6000 environment. In use in major film
`studios 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 and implementation. More than
`30,000+ lines of 56K assembler source code, several hundred pages of
`documentation, a dozen CD-ROMs of debugging data and lab notebooks.
`
`Client: Bias
`Location: Petaluma, CA
`For this well-known provider of audio software, provide and supervise a
`subcontractor to port a complicated digital signal processing algorithm into
`the DigiDesign TDM Environment, in Motorola 56K assembly language.
`
`Client: Universal Audio
`Location: Santa Cruz, CA
`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.
`
`Client: Stretch
`Location: Mountain View, CA
`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.
`
`Client: Language Scientific (formerly RIC)
`Location: Cambridge, MA
`For this major translation house, proofread German-English translations
`involving, among other things, audio compression (including German-
`language doctoral dissertations).
`
`Client: Analog Devices
`Location: Santa Clara, CA (Audio Rendering Technology Center)
`Port music synthesis algorithms to ARM7TDMI assembler, following
`ARM’s C calling conventions.
`
`Client: Dorrough Electronics
`Location: Chatsworth, CA
`Implement in C and Analog Devices Sharc 21161 assembler a novel
`scheme based on their patented technology to improve the perceived
`loudness of audio signals sent over broadcast. Provide a subcontractor
`
`CV of John Strawn, Ph.D., p. 11, Revised 4/6/2021
`
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`
`From:
`To:
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`2002
`2002
`Duties:
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`From:
`To:
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`2001
`2002
`Duties:
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`From:
`To:
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`1999
`2001
`Duties:
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`From:
`And
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`1995-6
`1998-9
`Duties:
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`who made significant contributions to filter design.
`
`Client: Analog Devices
`Location: Wilmington, MA (Ray Stata Technology Center)
`After an on-site visit to learn more about the technology and meet the
`team, I made recommendations on changes to architecture for a new
`version of an idiosyncratic signal processing chip. I also provided code
`examples for the new architecture.
`Client: Tensilica (now part of Cadence)
`Location: Santa Clara, CA
`For this configurable processor IP core provider, implement a highly
`optimized version of the modified discrete cosine transform (MDCT) for
`audio compression. Extensive investigation of theory and variants of the
`MDCT. Also port MPEG-2 low-complexity AAC decode and MP3
`encode from Thomson reference C++ code to 16-bit integerized C.
`Prepare various optimizations closer to the hardware than C++ usually
`allows.
`Client: Berkeley Design Technology, Inc.
`Location: Oakland, CA
`● For BDTI’s Buyer's Guide to DSP Processors, 2001 Edition,
`contribute major portions of the text analyzing processor architectures
`including the Analog Devices TigerSharc, and contribute also to the
`analyses of Motorola 56300, 56800, and 56800E processors;
`verification and in some cases re-writing assembly-language
`implementations of BDTI's benchmarks;
`● Prepare written analyses of Hitachi SH-DSP, SH3-DSP, SH-4, and
`SH-5 processor architectures. This again included verification and in
`some cases re-writing assembly-language implementations of BDTI's
`benchmarks;
`● Implement assembly-language routines related to multimedia
`compression in ARM7/ARM9 processor assembly language;
`● See also presentations, below.
`
`
`Client: Audio Precision
`Location: 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).
`
`CV of John Strawn, Ph.D., p. 12, Revised 4/6/2021
`
`

`

`From:
`To:
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`1997
`1999
`Duties:
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`
`From:
`To:
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`From:
`To:
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`From:
`To:
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`From:
`To:
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`From:
`To:
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`From:
`To:
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`From:
`To:
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`Client: Euphonics (later part of 3COM)
`Location: Boulder, CO
`Implement Dolby AC-3 audio compression decoder in 16-bit integer
`assembler on new Analog Devices 16-bit integer AD1818 (PCI
`SoundComm). 20K+ lines of assembler source. Passed first round of
`Dolby testing on first try. Integrate with Euphonics’ Real-Time Kernel.
`
`Client: Digital Technics (DTI)
`Location: Baltimore, MD.
`Implementation of CCITT R2 encoder/decoder (similar to DTMF) in
`Motorola 56002 assembly language, based on Goertzel algorithm. 13K+
`lines assembler. Deployed in the field in Asia and South America.
`
`Client: VM Labs
`Location: Los Altos, CA
`For this multimedia chip startup, provide detailed critique of their
`proprietary DSP chip architecture.
`
`1996
`1997
`Duties:
`
`1996
`1996
`Duties:
`
`Client: Oculix
`1993
`Location: Switzerland
`1995
`Duties: Motorola DSP 56000 assembler for numerical and FFT analysis of real-
`time data gathered by laser from the human eye. Based on NeXT
`Machine. 150K source.
`
`1993
`1994
`Duties:
`
`1993
`1994
`Duties:
`
`1993
`1993
`Duties:
`
`Client: