Description: Bilinear transform design a digital low-pass Butterworth filter. According filter design ideas, through bilinear transform the analog low-pass filter is transformed into a digital low-pass filter, using MATLAB to draw out the digital low-pass filter amplitude-frequency system function curve. End-use bilinear transform simulation using MATLAB function of the logarithm of the amplitude frequency and phase frequency curve Butterworth low-pass filter.
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Bilinear transform.doc
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