John Thatcher Email & Phone Number

United States

Simi Valley, California, United States

United States

Software Quality Assurance, Audio Quality Assurance and test on Software Dev team.Daily scrum/stand-up with (Agile) Software Tools Dev team in Ireland. Utilized Jira and Confluence for project story and issue/bug tracking. Jenkins,Git for build mgmt. and version control, Zephyr for manual and automated tests repo. Slack and Zoom for collaboration and communication with team across multiple projects.Other specialties and duties:Streaming Ecosystem Tools Testing.Streaming Device and app Testing.Development Support/TestingA/V Hardware Testing.A/V Test Content Creation, editing, muxing, packaging and hosting.Field Complaint Investigation,validation.R&D Investigative Testing.Critical Listening/ Testing.

United States

Created test cases/vectors, reference documentation, certification spec manuals, test plans and procedures for licensee certification package deliverables for new and legacy DTS technologies.These certification packages were utilized by licensees to pre-cert test their implementations of DTS tech in their products before submittal to receive certification.Trained and provided support for Product Certification Engineers and Technicians, in U.S. and in regional offices.Performed certification testing on Multiplexer/Demultiplexer and consumer A/V hardware and software products by conducting extensive Audio Performance Analysis, both subjective and objective, through industry standard audio testing, such as: frequency response at different sample rates, THD+Noise, Crosstalk, SNR, Channel Allocation, and listening tests. Determined pass/fail results and granted Certification to those products that met specifications and requirements.R&D support:Regularly supported Audio R&D team across several projects.Performed backward compatibility testing (subjective/objective)of new audio CODEC technology against legacy H/W. Performed Consumer Field Complaint validation support and issue resolution for DTS and DTS:X Consumer and Pro Audio Solutions. Marketing support:Performed Audio/Video QC and playback compatibility testing for the DTS Demo Bluray Disc release for the Annual Consumer Electronics Show. The promotional demo disc featured current theatrical and music releases utilizing DTS technology.EH&S Team Member (Environmental Health & Safety Team Representative)Test and measurement tools used: Audio Precision, Oscilloscopes, RTA, DMM, SPL Meter, DAW’s, Dummy speaker loads, measurement microphones, Adobe Creative Cloud Suite, Interra Baton, Media Info app, ffmpeg, Manzanita tools: MP4Mux, MP4Analyzer, MP2TSMux, MP2TSAnalyzer.

California, United States

Led Licensee Self Certification program training seminar in Japan for 5 major AVR Mfg.’s engineering teams: Denon, Pioneer, Sony, Yamaha, Onkyo.Developed Test packages and specifications docs for pre Certification packages for Licensees submitting product for DTS Certification. Performed extensive Audio Performance Analysis of consumer A/V products through industry standard audio testing, such as: frequency response at 44.1kHz, 48kHz, 96kHz, 192kHz sample rates, THD+Noise, Crosstalk,SNR, Channel Allocation,etc... Determined pass/fail results and granted Certification to those products that met specifications and requirements.Tested DTS Audio CODECs for R&D and internal Certification, Validated and Certified DTS Tech in Multiplexer/Demultiplexer HW/SW.Performed backwards compatibility testing (works with legacy/previously released hardware) and evaluation of new CODEC technology against commercially available A/V hardware and provided characterization reports to the Audio Engineering R&D team.Created test cases, materials, & cert package deliverables. Created Input test streams:DTS-HD encoded elementary streams and h.264 AVC, h.265 HEVC video files, multiplexed to container formats; MP4, MP2TS, MKV, for use in A/V hardware Audio Performance testing.Creation of reference documentation, Cert manuals, and Test procedures.

California, United States

Tested Licensee consumer A/V products submitted for DTS Certification by performing extensive Audio Performance Analysis through industry standard audio testing, such as: frequency response at 44.1kHz, 48kHz, 96kHz, 192kHz sample rates and different bit rates, THD+Noise, Crosstalk, SNR, Channel Allocation, etc... Determined pass/fail results and granted Certification to those products that met specifications and requirements.Performed backwards compatibility testing (works with legacy hardware) and evaluation of new CODEC technology against commercially available A/V hardware and provided characterization reports to the Audio Engineering R&D team.Created reference documentation, Cert manuals, test plans, procedures, and test report templates.

United States

Tested Licensee consumer A/V products submitted for DTS Certification by performing extensive Audio Performance Analysis through industry standard audio testing, such as: frequency response at 44.1kHz, 48kHz, 96kHz, 192kHz sample rates and different bit rates, THD+Noise, Crosstalk, SNR, Channel Allocation, etc... Determined pass/fail results and granted Certification to those products that met specifications and requirements.

Working from engineering drawings and schematics, assembled and wired components, alpha & beta-tested, troubleshot, and repaired engineering prototypes,first article, and ECO's for DTS Cinema and Pro Audio products. QC tested software encoders and calibrated and repaired studio encoder hardware. Additional/Responsibilities:Electro-Mechanical & PCB assemblyCable assembly and wiringThrough-hole & surface-mount solderingRework. Test and measurement tools used:Audio Precision, Oscilloscopes, RTA, DMM, SPL Meter, HyPot Tester, Variable Power Supplies. DAW's.

California, United States

Production test, assembly & alignment of Digital Cinema Processors, and other Cinema and Consumer hardware. Troubleshooting and repair of production hardware and RMAs. Incoming inspection of production hardware and PCBAs. Assembled, tested, and shipped the 1st 1,000 DTS Cinema Processor systems for installation in movie theaters throughout the US, for the opening of the motion picture “Jurassic Park”. Additional/Responsibilities:Electro-Mechanical & PCB assemblyCable assembly and wiringThrough-hole & surface-mount solderingRework.