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Jeremy M. Parker Chelmsford, MA 01863 | [email protected] | 508-572-7992 | Portfolio | Linked-In Profile | Website Objective To apply innovative design and problem-solving skills to the development of highperformance audio products. To continually grow my expertise and nurture my passion for realizing each design’s full potential. Work Experience Gentex Corporation – Manchester, NH June 2009 – Present Electrical Engineer Responsibilities n Electronics design for electret microphones and communication systems for ruggedized military and commercial applications n Analog circuit design and simulation for low noise and low THD, including preamps, filtering/EQ, limiters/compressors, power amp topologies (class-D, amp ICs), control circuits, power supplies, and discrete circuit design n Hardware design and application of DSP for noise-reduction, EQ/filtering, dynamics processing, etc. n Acoustic measurement and design for key microphone performance parameters and speech intelligibility criteria n Microphone material and manufacturing process improvements n Schematic capture, BOM generation, and product requirement documentation n PCB design approval, optimized for signal integrity, EMC, and manufacturability n In-house EMC and environmental testing, military and commercial standards n Electronic component sourcing, testing, approval, as well as component vendor relations n R&D efforts, analysis and qualification of new technologies and competitive products Project Highlights n Chemical-Biological Protection Communication Unit – Next-generation, batterypowered, pilot-worn device for hearing and speaking through protective gear: n Identified acoustical/electrical performance targets needed for ANSI intelligibility requirement n Worked with customer and ANSI spec experts to establish best practices for intelligibility testing n Identified existing product’s acoustical/electrical design shortcomings and the related technical issues with integrating the product into the chem-bio protective system n Characterized the acoustical/electrical performance of all microphone and speaker transducers related to the product and overall system n Interfaced to customer on-site during testing, troubleshooting, and prototype demonstration phases n Conceived and executed electrical/acoustic design improvements, outlined technical path to success for customer acceptance n Re-architected existing product to incorporate DSP, used GUI programming environment to execute anti-feedback, EQ, dynamics processing, multiplexing, and noise-reduction techniques n Military Oxygen Mask Microphones – Noise-cancelling electret microphones for fighter pilot oxygen mask use: Jeremy M. Parker Chelmsford, MA 01863 | [email protected] | 508-572-7992 | Portfolio Work Experience Continued | Linked-In Profile | Website Vapor barrier design and analysis for acoustic transparency Oxygen mask acoustic characterization n Measurement, analysis, and field-recording of associated aircraft intercom system n General Aviation Boom Microphone – Noise-cancelling electret microphone for Bose headset: n Optimization of electret preamp for customer requirements n Conceptualized and executed new preamp-to-electret attachment technique for improved manufacturability n n Boston Acoustics, Inc. – Peabody, MA June 1999 – June 2009 Electrical Engineer Responsibilities n Electronics design for powered subwoofers, home theater systems, amplifiers, multimedia computer speakers, and table-top radios; resulting in finished products that were successful in the consumer electronics marketplace, worldwide n Specializing in analog circuit design for low noise and low THD, including filtering/ EQ, limiters/compressors, power amp topologies (class-AB, class-D, amp ICs), control circuits, power supplies, and protection schemes n Schematic capture, simulation, and BOM generation n PCB design optimized for signal integrity, EMC, and manufacturability n Thermal design, measurement, and complete system power testing n System architecture, including cabling/interconnects, shielding, grounding schemes, and mechanical layout n In-house EMC testing and troubleshooting for RFI, CRFI, ESD, Immunity, Safety, etc. n Thorough design verification from prototype, through product development, to mass production n Communication, coordination, and management of overseas manufacturing and engineering n Electronic component sourcing, testing, approval, as well as component vendor relations n R&D efforts and functional prototyping aligned with product roadmaps n Project management relating to the electronics portion of overall product development n Analysis and qualification of new technologies and competitive products Project Highlights n VPS-210 Powered Subwoofer – True 500W class-D subwoofer amplifier for the highperformance VS Speaker Series: n Company-first 500W in-house design to market n Company-first 1000W in-house functional prototype (proposed high-power variant) n Company-first Energy Star rated product n High-efficiency, low-distortion, scalable class-D power amplifier design n Project management of the electronics design, including overseas parts sourcing, IC vendor design collaboration, and EMC approvals Jeremy M. Parker Chelmsford, MA 01863 | [email protected] | 508-572-7992 | Portfolio | Linked-In Profile | Website Work Experience Continued PCB design optimized for both class-D RFI considerations and audio performance n Low-noise analog circuit design for EQ, crossover, and VCA compressor n VRA3200 & VRA2200 Power Amplifiers – High-power modular class AB amplifier architecture for 2 X 200W and 3 X 200W home theater amplification: n Company-first 200W class-AB power amp n Extremely low-distortion, low-noise discrete design n True short-circuit protection, monitoring output stage power dissipation n Power-up/down circuitry and output relays to prevent audible artifacts from AC line voltage interruptions n Robust thermal design and protection for long-term continuous power output n Avidea 770 Subwoofer Electronics – Multi-channel amplifier to power the subwoofer and satellites for high-performance 6.1 home theater system: n Low-noise analog design for individual channel EQ, crossovers, sub-channel VCA compressor n Power supply design and high-power IC-amplifier implementation n Discrete short-circuit protection design, power-up/down and relay control circuitry for bulletproof operation without audible artifacts n Robust thermal design and protection for long-term continuous power output n Avidea Adapter box – conceptualized, engineered and project-managed a device for connecting any third-party receiver to the Avidea Sub Electronics Education Kimmel-Gerke “Designing for EMC/SI” Seminar n July 2004 Grounding, Shielding, Power, Emissions, ESD, RFI & More University of Massachusetts at Lowell – Lowell, MA September 1994 – June 1999 Bachelor’s of Electrical Engineering, Honors Program Minor in Sound Recording Technology Eta Kappa Nu, Tau Beta Pi Honor Societies Graduated Magna Cum Laude, Dean’s List Skills Microsoft Office Suite, PCAD (Schematic, PCB, Library Executive), Altium Designer, PSpice, Matlab, Audio Precision Systems I, II, 2700 (APWIN Software & APWIN Basic), Test equipment (DSOs, spectrum analyzer, RF amplification, signal generators, current clamps, EMC equipment, power supplies), B&K 2012 Audio Analyzer Interests Jazz piano, composition, and recording, vintage keyboard instruments, photography, speaker-building