2025-L09 - EE-2025 Spring-2004Lecture 9D-to-A

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Unformatted text preview: EE-2025 Spring-2004Lecture 9D-to-A Conversion9-Feb-20042/7/2004EE-2025 Spring-2004 jMc2Lab #4 AnnouncementNO regular Lab on Tuesday, 10-FebInstead, 12-3 Open lab for help on Lab #4Lab #4 listening starts on WedFormalLab Report: will be worth 150 ptsMake the song sound right Get the Correctfrequencies and durationsThen tweak Eliminate clicks with envelopeLab #5 is postedPractice image display and down-sampling2/7/2004EE-2025 Spring-2004 jMc3Concatenating SinusoidsHow do you prevent JUMPS?Envelope: taper the beginning & endExampleFreq = { 1.8, 2.4, 3.0, 3.6, 4.2, 4.8 } Hz2/7/2004EE-2025 Spring-2004 jMc4EducationEducation is an admirable thing, but it is well to remember from time to time thatnothing that is worth knowing can be taught. Oscar WildeSo, Labs are one way to approximate knowledge acquisition in the real worldLecture2/7/2004EE-2025 Spring-2004 jMc5READING ASSIGNMENTSThis Lecture:Chapter 4: Sections 4-4, 4-5Other Reading:Recitation: Section 4-3 (Strobe Demo)Next Lecture: Chapter 5 (beginning)2/7/2004EE-2025 Spring-2004 jMc6LECTURE OBJECTIVESFOLDING: a type of ALIASINGDIGITAL-to-ANALOG CONVERSION isReconstruction from samplesSAMPLING THEOREM appliesSmooth InterpolationMathematical Model of D-to-ASUM of SHIFTED PULSESLinear Interpolation example2/7/2004EE-2025 Spring-2004 jMc7A-to-DConvert x(t) to numbersstored in memory D-to-AConvert y[n]back to a continuous-time signal, y(t)y[n]is called a discrete-time signal...
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This note was uploaded on 09/14/2010 for the course ECE 2025 taught by Professor Juang during the Spring '08 term at Georgia Institute of Technology.

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2025-L09 - EE-2025 Spring-2004Lecture 9D-to-A

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