2025-L05 - ECE-2025 Spring-2009 General Information Office...

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ECE-2025 Spring-2009 Lecture 5 Periodic Signals, Harmonics & Time-Varying Sinusoids 23-Jan-09 eneral Information General Information ffice Hours on t quare WIKI ± Office Hours on t Office Hours on t-square WIKI square WIKI ± t-square: square: OFFICIAL ANNOUNCEMENTS ± Old Quizzes & Problems are part of the huge database on the SP- First CDROM website (linked on t-square) uiz #1 on 6 eb (Friday) ± Quiz #1 on 6-Feb (Friday) ± Allowed one page of notes (Handwritten) ± Calculators permitted ± HW #3 due NEXT WEEK (26-Jan) in Recitation 1/21/2009 EE-2025 Spring-2008 jMc 2 ± Laptops OK in Lab ab Info Lab Info ab #2 Report ± Lab #2 Report ± Start work early—there’s a lot to read urn in at beginning your lab time ± Turn in at beginning your lab time ± Discuss lab report standards with your TA ± ab #3 Lab #3 ± Bring headphones ± iscellaneous Miscellaneous ± ERRORS ERRORS ? ALWAYS Check Announcements ± Complete INSTRUCTOR VERIFICATION in Lab 1/21/2009 EE-2025 Spring-2008 jMc 3 Concept Map for Chapter 3 1/21/2009 EE-2025 Spring-2005 jMc 4 Lecture
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EADING ASSIGNMENTS READING ASSIGNMENTS ± This Lecture: ± Chapter 3, Sections 3-2 and 3-3 ± Chapter 3, Sections 3-7 and 3-8 ± Next Lecture: ± ourier Series ANALYSIS Fourier Series ANALYSIS ± Sections 3-4, 3-5 and 3-6 1/21/2009 EE-2025 Spring-2005 jMc 5 roblem Solving Skills Problem Solving Skills ± Math Formula ± Sum of Cosines ± Plot & Sketches ± S(t) versus t ± Amp, Freq, Phase ± Spectrum ± Recorded Signals ± Speech usic ± MATLAB ± Numerical omputation ± Music ± No simple formula ± Computation ± Plotting list of numbers 1/21/2009 EE-2025 Spring-2005 jMc 6 ECTURE OBJECTIVES LECTURE OBJECTIVES ± ignals with ARMONIC requencies Signals with HARMONIC Frequencies ± Add Sinusoids with f k = kf 0 N + + = k k t kf A A t x 0 0 ) 2 cos( ) ( ϕ π FREQUENCY can change vs. TIME Chirps: = k 1 p Introduce Spectrogram Visualization (specgram.m) x ( t ) = cos( α t 2 ) 1/21/2009 EE-2025 Spring-2005 jMc 7 (plotspec.m) PECTRUM DIAGRAM SPECTRUM DIAGRAM
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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 Institute of Technology.

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2025-L05 - ECE-2025 Spring-2009 General Information Office...

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