[PPT].Lesson 01-Introduction

[PPT].Lesson 01-Introduction - Lesson 01: Introduction to...

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Lesson 01: Introduction to Digital Signal Processing (DSP) What’s it all about? Origins of DSP Signal and System domains – Continuous-time – Discrete-time Digital g DSP advantages and disadvantages Motivational examples No Challenge Problem Introduction to MATLAB Project 1 Lesson 01 A Cons ltation Times TA Consultation Times 11 am - 12:00 pm, Monday. Location: Building RLA, Room 404A. (Reed lab) g, ( ) 11 am - 12:00 pm, Thursday. Location: Building NEB, Room 436 :30pm - :30 pm Thursday 1:30pm 2:30 pm, Thursday. Location: Building NEB, Room 436 lso posted on course home page Also posted on course home page Lesson 01 rigins of DSP Origins of DSP i it l i2 5 W h h i lt i ld – Pre-digital – Amazing 25 W humans, mechanical, optical, and analog systems emember man was put on the moon by an analog slide rule (remember, man was put on the moon by an analog slide rule, not a digital computer). Transitional - Claude Shannon and Harry Nyquist. (1928/1949) yy q ( ) – DSP dawn – Colley-Tukey FFT (1965) – DSP era – Intel 2920 (1980) Lesson 01 rigins of DSP Origins of DSP tel 2920 Intel 2920 Analog Signal Processor Analog??? Lesson 01 rigins of DSP Origins of DSP Lesson 01 ignal Domains Signal Domains •1 - D - 2 D •M - D JPEG compressed image Lena Lesson 01 Signal Domains Continuous-time signals Infinite resolution in time and amplitude x(t) Continuous-time causal system (output follows input) y( p p ) Continuous-time non-causal system (prophetic) Is x(t) = cos( 0 t) a causal on non-causal signal? Lesson 01 Signal Domains Discrete-time Infinite resolution in amplitude Discrete resolution in time Requires an ideal sampler. xamples: Sample data control systems economic systems biological Examples: Sample data control systems, economic systems, biological models, … f s Sample and Hold x ( t ) x [ k ] -. Circuit Continuous-time to discret-time conversion. Lesson 01 Signal Domains Discrete-time signal example: Dow Jones Average Note: Digital signal if quantized to the penny. Lesson 01
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ignal Domains Signal Domains Digital Signals Discrete resolution in both amplitude and time Requires an ADC f s Sample and Hold x ( t ) x [ k ] ADC -. Circuit Quantizer ontinuous- me to discret- me conversion Continuous time to discret time conversion. Lesson 01 ignal Domains Signal Domains Continuous-time (analog) signal x(t) ampled Discrete- me signal Signal uantize Taxonomy Quantized Q (digital) signal x Q [k] -Q Lesson 01 lementar Signals Elementary Signals Examples of MATLAB constructs supplied discrete-time signals: –I m p u l s e Step function f t i Ramp function Exponential (real and complex) Lesson 01 lementar Signals Elementary Signals Sinusoidal (damped and undamped) Random (uniform and normal)
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[PPT].Lesson 01-Introduction - Lesson 01: Introduction to...

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