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ECE2025-L1 - Introduction to Signal Processing ECE2025...

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ECE2025 Spring 2012 School of Electrical & Computer Engineering Georgia Institute of Technology LECTURE #1 Intro to Signal Processing January 9, 2012 ECE2025 Copyright JMC-BHJ 2 Introduction to Signal Processing What is a signal? A signal is a characterization of information represented as a function of time or space, a sequence of symbols, or simply a hand gesture. For our purposes, we are most interested in signals that are function of time; examples: sound waves: speech, music, and the like; visual images: pictures, video; neural activities; radio waves; and others For processing, these functions are turned into sequences of numbers. Spring 2012 ECE2025 Copyright JMC-BHJ 3 Audio and Video Applications Spring 2012 ECE2025 Copyright JMC-BHJ 4 Image Processing Image sharpening and other enhancements Image de-blurring Spring 2012
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ECE2025 Copyright JMC-BHJ 5 Medical Diagnostics and Treatment Spring 2012 ECE2025 Copyright JMC-BHJ 6 Medical Imaging Spring 2012 ECE2025 Copyright JMC-BHJ 7 Neural Signals Neural spikes Spring 2012 ECE2025 Copyright JMC-BHJ 8 Communications Spring 2012
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