离散时间信号处理（姒强）Chapter4[Sampling of continuous time signal].pptVIP

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离散时间信号处理（姒强）Chapter4[Sampling of continuous time signal].ppt

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Chap4 Sampling of Continuous-Time Signal … … … … Chap4 Sampling of Continuous-Time Signal … … … … … … Chap4 Sampling of Continuous-Time Signal … … … … D/C C/D Consideration: Chap4 Sampling of Continuous-Time Signal Chap4 Sampling of Continuous-Time Signal §4.5 C-T Processing Of D-T Signal C/D D/C ? Chap4 Sampling of Continuous-Time Signal ① D/C Converter: ② LTI C-T System: ③ C/D Converter: Chap4 Sampling of Continuous-Time Signal Chap4 Sampling of Continuous-Time Signal Example: Noninteger delay C/D D/C Homework: 4.5,4.25(a)(b) Chap4 Sampling of Continuous-Time Signal §4.6 Changing the Sampling Rate Using D-T Processing C/D Chap4 Sampling of Continuous-Time Signal C/D Chap4 Sampling of Continuous-Time Signal §4.6.1 Sampling Rate Reduction By an Integer Factor Chap4 Sampling of Continuous-Time Signal Chap4 Sampling of Continuous-Time Signal Chap4 Sampling of Continuous-Time Signal ?? ?? ?? Chap4 Sampling of Continuous-Time Signal Chap4 Sampling of Continuous-Time Signal Consideration aliasing Chap4 Sampling of Continuous-Time Signal Anti-aliasing Filter Chap4 Sampling of Continuous-Time Signal §4.6.2 Increasing The Sampling Rate By an Integer Factor Chap4 Sampling of Continuous-Time Signal ? Chap4 Sampling of Continuous-Time Signal images Chap4 Sampling of Continuous-Time Signal Anti-image Filter Chap4 Sampling of Continuous-Time Signal §4.6.3 Changing Sampling Rate By a NonInteger Factor Anti-image Anti-aliasing Chap4 Sampling of Continuous-Time Signal Chap4 Sampling of Continuous-Time Signal §4.8 Digital Processing Of Analog Signal D/C C/D Chap4 Sampling of Continuous-Time Signal ADC D.T system DAC Anti-aliasing Analog Filter (A.F) ?? ?? A. F ?? Chap4 Sampling of Continuous-Time Signal Oversampled ADC ADC D.T system DAC A. F ?? ?? ?? Chap4 Sampling of Continuous-Time Signal ?? D.T system D.F Chap4 Sampling of Continuous-Time Signal Thanks！ Chap4 Sampling of Continuous-Time Signal §4.0 Introduction Continuous-time signal Samp