上海交大dsp课程ppt第3章.ppt

《上海交大dsp课程ppt第3章.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、13.1definition3.2propertiesofROC3.3theinversez-transform3.4z-transformpropertiesChapter3thez-Transform23.1definitionFigure3.23theconditionforconvergence：4EXAMPLE:ROCtakesthepolesasitsboundary53.2propertiesofROC671.inspectionmethod2.partialfractionexpansion3.powerseriesexpa

2、nsion3.3theinversez-transform8EXAMPLE:EXAMPLE:93.4z-transformproperties10117.x[n]iscausal12EXAMPLE:13B=[2,1,0,-1]A=[1,0,0.5,0,-1]freqz(B,A)RelationbetweenH(z)andfrequencyresponce:14153.1thez-transform3.2propertiesofROCright-sidessequence:insidethecircleleft-sidessequence:o

3、utsidethecirclefinite-durationsequence:theentirez-planetwo-sidedsequence:aringcausalsequence:includinginfinitestablesequence:includingtheunitcircle3.3theinversez-transform:inspectionmethodpartialfractionexpansionpowerseriesexpansion3.4z-transformpropertiessummary:16Keysand

4、difficulties：ROC;theconvolutionproperty;therelationshipamongsystemfunction,theimpulseresponse,frequencyresponseanddifferenceequation;exercises:3.373.38（thesecanbesolvedwithoutcontourintegralmethod）