使用PIC18单片机实现FIR和IIR数字滤波器

TheMicrochipPICmicro

®

PIC18familyofmicrocontrol-

lersarepopularlyknownfortheirlogicandcontrolling

functions.Inaddition,thesemicrocontrollershavebuilt-

inhardwaremultipliersandmultiplefilepointers.These

features,alongwiththebuilt-inanalog-to-digitalcon-

verter(ADC),makePIC18microcontrollersacompe-

tentchoiceforapplicationswherelogicandcontrolling

functionsarecombinedwithsignalprocessing

applications.MAN852ImplementingFIRandIIRDigitalFiltersUsingPIC18MicrocontrollersAuthor:B.K.AnanthaRamuFIRFILTERIMPLEMENTATIONMicrochipTechnologyDesignsEquation1showsthecomputationperformedbyan(India)Pvt.Ltd.FIRfilter.EQUATION1:Y[N]COMPUTATIONINTRODUCTIONy[n]=x[n]*a0+x[n