2025-L24 - ECE-2025 Spring-2009 Info: Lab and HW Friday at...

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ECE-2025 Spring-2009 Lecture 24 Sampling and Reconstruction (Fourier View) () 20-April-09 Info: Lab and HW ± riday at NOON: Friday at NOON: ± HW #13 due Friday in Lecture (before NOON) ± riday (Noon) is Last hance to turn in late Labs Friday (Noon) is Last Chance to turn in late Labs ± Lab #12 during the last week, ending Tuesday ± one ompletely - ab Done completely in Lab ± Three Surveys ± Final Exam will be 27-Apr (Monday, 2:50pm) ± Coverage: all, with emphasis on Chaps 9-12 ± IIR: Frequency response only ± Review Session, 26-April, Sunday @ 6:00pm (ECE Aud) 4/19/2009 ECE-2025 Spring-09 jMc 2 uiz #3 Results Quiz #3 Results 4/19/2009 ECE-2025 Spring-09 jMc 3 otals as a Percentage Totals as a Percentage To Go: Recitation (5pts) and Final Exam (33pts) 4/19/2009 ECE-2025 Spring-09 jMc 4 Quiz Average might be a good predictor
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ECTURE OBJECTIVES LECTURE OBJECTIVES ampling Theorem evisited ± Sampling Theorem Revisited ± GENERAL: in the FREQUENCY DOMAIN ± Fourier transform of sampled signal pg ± Reconstruction from samples ± Reading: Chap 12, Section 12-3 ± Effective Frequency Response ± A/D ± H(z), ie, Digital Filter ± /A 4/19/2009 ECE-2025 Fall-03 jMc 5 D/A ± Equivalent to Overal Analog Filter eal C Converter Ideal C-to-D Converter athematical Model for A Mathematical Model for A-to-D x [ n ] = x ( nT s ) FOURIER TRANSFORM f x ) ??? 4/19/2009 ECE-2025 Fall-03 jMc 7 o s (t) Periodic Impulse Train ω s = 2 π T −∞ −∞ = = t jk k s s e a nT t t p δ ) ( ) ( s = = k n T t jk t s 1 1 2 / Fourier Series 4/19/2009 ECE-2025 Fall-03 jMc 8 s T s k T dt e t T a s s ) ( 2 / = = FT of Impulse Train = = s s k j P nT t t p ) ( 2 ) ( ) ( ) ( −∞ = −∞ = k s n T 2 s s
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This note was uploaded on 01/27/2011 for the course ECE 2025 taught by Professor Juang during the Spring '08 term at Georgia Tech.

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2025-L24 - ECE-2025 Spring-2009 Info: Lab and HW Friday at...

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