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% Chapter 7: Example 7.19 % Freq. Samp. Tech.: Differentiator % M = 33; alpha = (M-1)/2; Dw = 2*pi/M; l = 0:M-1; wl = Dw*l; k1 = 0:floor((M-1)/2); k2 = floor((M-1)/2)+1:M-1; Hrs = [j*

% Chapter 7: Example 7.15 % Freq. Samp. Tech.: Lowpass,Optimum method % % (a) T1 = 0.39 M = 40; alpha = (M-1)/2; l = 0:M-1; wl = (2*pi/M)*l; Hrs = [ones(1,5),0.3904,zeros(1,29),0.3904,

% Chapter 7: Example 7.15 % Freq. Samp. Tech.: Lowpass,Optimum method % % (a) T1 = 0.5 M = 40; alpha = (M-1)/2; l = 0:M-1; wl = (2*pi/M)*l; Hrs = [ones(1,5),0.5,zeros(1,29),0.5,ones(1,

% Chapter 7: Example 7.3 Amplitude vs Magnitude response % h = [1,1,1]; w = [0:500]*pi/500; H = freqz(h,1,w); magH = abs(H); phaH = angle(H); ampH = ones(1,501)+2*cos(w); angH = -w; subplot(1,1

% Chapter 7 Example 7.23 % Lowpass filter design using PM algorithm % wp = 0.2*pi; ws = 0.3*pi; Rp = 0.25; As = 50; delta1 = (10^(Rp/20)-1)/(10^(Rp/20)+1) delta2 = (1+delta1)*(10^(-As/2

% Chapter 07: Example 7.9 Lowpass filter design - Kaiser window % wp = 0.2*pi; ws = 0.3*pi; As = 50; tr_width = ws - wp; M = ceil((As-7.95)/(14.36*tr_width/(2*pi))+1) + 1 n=[0:1:M-1]; beta = 0.1

% Chapter 8: Example 8.29 % Elliptic Bandpass Filter Design: % Use of the ELLIP function % % Digital Filter Specifications: % Type: Elliptic Bandpass ws = [0.3*pi

% Chapter 8: Example 8.11 % Impulse Invariance Transformation % Butterworth Lowpass Filter Design % % Digital Filter Specifications: wp = 0.2*pi;

% Chapter 8: Example 8.14 % Impulse Invariance Transformation % Elliptic Lowpass Filter Design % % Digital Filter Specifications: wp = 0.2*pi;

% Chapter 8: Example 8.13 % Impulse Invariance Transformation % Chebyshev-2 Lowpass Filter Design % % Digital Filter Specifications: wp = 0.2*pi;