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Founer Transform
f signalN IIA EkN c
f If KI ex E NK0 K o
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f y filter from f appliedtoy
fT k INICH
Low
circular
ek ej ek j Convolution
Ded f y j3 ifEk3yEj k
Def 2.4text
CirculantmatS shift hwtm.fmuntakyleC4nxDto itselfSf KI FCK B
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121 A circulant matrix is one ofthefan
oajSJ some ay's in IC
EI Tz t Ints manyaverage
smoothes out a signal
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How does Tzact on wantons
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Ek Itak EkN
f INCH Ek Fck L Itut
k 0
yf y
END of REVIEW
FAST FOURIER TRANSFORM
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