The main content of this paper are: the use of Matlab, the integrated use of butterworth and iir the two filters used for fast Fourier transform and inverse transform, the design introduces a one-dimensional signal (simple functions) and two-dimensional signal (image) bilinear transform design iir B

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This paper primary coverage is: Using MATLAB, synthesizes using Butterworth and IIR these two kind of filter (simple function) and the two-dimensional signal (picture) carries on the fast Fournier transformation and the inverse transformation to the unidimensional signal, this design introduction us

This times papers of main content is: using MATLAB, integrated using Butterworth and IIR this two species filter on a dimension signal (simple function) and II dimension signal (pictures) for fast ft leaves transform and anti-transform, the design describes using double linear transform method desig