Eric R. Email & Phone Number

Raleigh-Durham, North Carolina Area

Designed a DSP audio subsystem for a smartphone platform. Started with fuzzy requirements and took it through all implementation stages. The top-down strategy caught problems at the earliest stage and produced world-class performance with a small team.· Improved my MATLAB methodology (developed at Ericsson) to use the same model for unit, subsystem and system bit-exact testing; to support single-stepping MATLAB and target code for bit-exact differences; and to support frame re-run for… Show more Designed a DSP audio subsystem for a smartphone platform. Started with fuzzy requirements and took it through all implementation stages. The top-down strategy caught problems at the earliest stage and produced world-class performance with a small team.· Improved my MATLAB methodology (developed at Ericsson) to use the same model for unit, subsystem and system bit-exact testing; to support single-stepping MATLAB and target code for bit-exact differences; and to support frame re-run for bit-exact differences to avoid the need to restart the test.· Created an audio processing block diagram in Visio as a negotiation tool between DSP, System Analysis and Host Software groups.· Architected the system clock/synchronization.· Wrote coding guidelines and co-architected an isosynchronous framework/operating system to implement the block diagram, allowing other developers to drop in their deliverables.· Created MATLAB simulations and test vectors to allow review of algorithms by Acoustics Engineering before target implementation.· Coded algorithm blocks in C and CEVA Teak assembly.· Performed bit-exact unit-testing and system-testing using simulator and JTAG emulator.· Documented requirements, design and parameters of algorithm blocks.· Utilized Rational ClearCase version control, ClearQuest bug tracking, MS Office· Educated Acoustics Engineering in creating a link budget with gain and clipping to obtain optimal loudness and echo suppressor performance.Designed the following algorithms to work with music and voice:· Echo suppressor· 12-dB noise-adaptive gain (send & receive)· Asynchronous sample rate converter with click prevention on underrun· Peak limiter· RMS/loudness limiter· IIR filter without audible quantization effects· Mixer and gain with minimum quantization distortion· Keyclick generator/mixer· DC-blocking filter that does not produce a DC step for a full-scale input Show less

Designed a DSP-based vehicle hands-free accessory, then ported the algorithms to a cellular telephone.· Invented a methodology for taking an algorithm from floating-point to fixed-point in MATLAB with automated bit-exact testing against the target, eliminating the need for C floating-point and C fixed-point implementations, doubling engineering efficiency and eliminating sources of human error.· Created the hardware and DSP block diagrams.· Worked with Analog Devices to create a… Show more Designed a DSP-based vehicle hands-free accessory, then ported the algorithms to a cellular telephone.· Invented a methodology for taking an algorithm from floating-point to fixed-point in MATLAB with automated bit-exact testing against the target, eliminating the need for C floating-point and C fixed-point implementations, doubling engineering efficiency and eliminating sources of human error.· Created the hardware and DSP block diagrams.· Worked with Analog Devices to create a new ADC+DAC that interfaces to a single USART.· Co-architected host protocol, including overlay modules.· Architected the system clock/synchronization.· Wrote coding guidelines and architected an isosynchronous framework/operating system to implement the block diagram, allowing other developers to drop in their deliverables.· Created MATLAB simulations and test vectors.· Coded algorithm blocks in TI C54x assembly.· Performed bit-exact unit-testing and system-testing using simulator and JTAG emulator.· Documented requirements, design and parameters of algorithm blocks.· Utilized PVCS version control, PVCS Tracker bug tracking, UNIX, MS Office· Educated Acoustics Engineering in creating a link budget with gain and clipping to obtain optimal loudness and echo suppressor performance. Show less

Ms, Electrical Engineering, Dsp

5.0/5.0 GPA

Bs, Computer Engineering - Co-Op

Activities and Societies: President of Engineering Toastmasters 4.9/5.0 GPA Co-op with Motorola