Jim Shima has a BSEE and MSEE, specializing in signal and image processing from the University of Florida.
He has been a signal processing practitioner, HW designer, and algorithm developer for over 30 years - leveraging DSP on everything from missile tracking to hearing aids.
He has developed several innovations in the field and even designed and implemented one of the first software-defined radios back in 1993.
Jim has held positions at TI, Qualcomm, Symmetricom, Ball Aerospace, and Trimble.
He is currently a technical fellow at BAE Systems, leading efforts on RF signal processing with AI, adaptive beamforming, and digital communications.
In his free time, Jim has also developed several real-time audio signal processing solutions vetted by Skywalker Sound and has even collaborated with legendary sound designer Ben Burtt on an audio-based physics engine for real-time sound effects synthesis.
Uncommon Multirate Signal Processing for Real-Time Systems
Jim Shima
This talk covers a not-so-well-known multirate Fourier property and it's time-domain dual. Though obscure, the judicious use of this property can open up large unexpected computational efficiencies for real-time signal processing algorithms. Efficient solutions suitable for high-speed implementations are also presented - including decimation, channelization, and sparse signal processing.