标签: Polar

电路板阻抗介绍(Polar公司提供).pdf

阻抗控制計算-----Polarsi9000.pdf

ＭＬＣ型ＮＡＮＤ闪存中Ｐｏｌａｒ码的优化设计

Fourieranalysisisafamilyofmathematicaltechniques,allbasedondecomposingsignalsintosinusoids.ThediscreteFouriertransform(DFT)isthefamilymemberusedwithdigitizedsignals.ThisisthefirstoffourchaptersontherealDFT,aversionofthediscreteFouriertransformthatusesrealnumberstorepresenttheinputandoutputsignals.ThecomplexDFT,amoreadvancedtechniquethatusescomplexnumbers,willbediscussedinChapter31.InthischapterwelookatthemathematicsandalgorithmsoftheFourierdecomposition,theheartoftheDFT.CHAPTERTheDiscreteFourierTransform8Fourieranalysisisafamilyofmathematicaltechniques,allbasedondecomposingsignalsintosinusoids.ThediscreteFouriertransform(DFT)isthefamilymemberusedwithdigitizedsignals.ThisisthefirstoffourchaptersontherealDFT,aversionofthediscreteFouriertransformthatusesrealnumberstorepresenttheinputandoutputsignals.ThecomplexDFT,amoreadvancedtechniquethatusescomplexnumbers,willbediscussedinChapter31.InthischapterwelookatthemathematicsandalgorithmsoftheFourierdecomposition,theheartoftheDFT.TheFamilyofFourierTransformFourieranalysisisnamedafterJeanBaptisteJosephFourier(1768-1830),aFren……

Complexnumbersareanextensionoftheordinarynumbersusedineverydaymath.Theyhavetheuniquepropertyofrepresentingandmanipulatingtwovariablesasasinglequantity.ThisfitsverynaturallywithFourieranalysis,wherethefrequencydomainiscomposedoftwosignals,therealandtheimaginaryparts.ComplexnumbersshortentheequationsusedinDSP,andenabletechniquesthataredifficultorimpossiblewithrealnumbersalone.Forinstance,theFastFourierTransformisbasedoncomplexnumbers.Unfortunately,complextechniquesareverymathematical,anditrequiresagreatdealofstudyandpracticetousethemeffectively.ManyscientistsandengineersregardcomplextechniquesasthedividinglinebetweenDSPasatool,andDSPasacareer.Inthischapter,welookatthemathematicsofcomplexnumbers,andelementarywaysofusingtheminscienceandengineering.Thefollowingthreechaptersdiscussimportanttechniquesbasedoncomplexnumbers:thecomplexFouriertransform,theLaplacetransform,andthez-transform.ThesecomplextransformsaretheheartoftheoreticalDSP.Getready,herecomesthemath!CHAPTERComplexNumbers30Complexnumbersareanextensionoftheordinarynumbersusedineverydaymath.Theyhavetheuniquepropertyofrepresentingandmanipulatingtwovariablesasasinglequantity.ThisfitsverynaturallywithFourieranalysis,wherethefrequencydomainiscomposedoftwosignals,therealandtheimaginaryparts.ComplexnumbersshortentheequationsusedinDSP,andenabletechniquesthataredifficultorimpossiblewithrealnumbersalone.Forinstance,theFastFourierTransformisbasedoncomplexnumbers.Unfortunately,complextechniquesareverymathematical,anditrequiresagreatdealofstudyandpracticetousethemeffectively.Manyscientistsandengineersregardcomplextechniquesasthedividinglineb……

POLARSI9000及CRACK,PolarSI9000……

卖看家软件，Si9000,Polar……