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% MATLAB script for Illustrative Problem 2.8. delta_w=2*pi/100; w=-pi:delta_w:pi; % one period of Sy Sy=1./(1.9025-1.9*cos(w)); % Plotting command follows. plot(w,Sy);

% ex_07_07_1.m : 习题 7.7 clear all; N=31; for i=0:N-1 w(i+1)=abs(sin(2*pi*i/N))/pi-(1-2*abs(i-N/2)/N)*cos(2*pi*i/N); end [W,f]=freqz(w,1,256,'whole',1); subplot(221); t=0:N-1; stem(t,w

function I=My_Lot(X,p) [N,K]=size(X); x=double(X); y1=zeros(N,K); M=8; L=2*M; a=[0.13*pi 0.16*pi 0.13*pi]; P=fast_LOT(a); y2=zeros(N+L,K); x2=zeros(N+L,K); x2(1:M,1:K)=x(M:-1:1,1:K); x2((M+

% ex_07_03_2.m : 习题 7.3 clear all; fl=pi/6;fh=pi/3;N=29; factor=(N+1)/2;m=factor*fl/pi; m=floor(m);m2=factor*fh/pi;m2=ceil(m2); j=sqrt(-1); for k=0:(N-1) if((k=(N-m))||((k>=

% ex_07_04_1.m : 习题 7.4 clear all; close all; N=33; m=(N-1)/4; n=1:N; h(n)=0; for k=0:(m-1) n=4*k+2; h(n+1)=8/(pi*(n-16))/(pi*(n-16)); end h((N+1)/2)=0.5; for k=0:(N-1)/2

% ex_07_03_1.m : 习题 7.3 clear all; fl=pi/4; N=29; factor=(N+1)/2; m=factor*fl/pi; m=floor(m); j=sqrt(-1); for k=0:(N-1) if(k=(N-m)) a=-j*(N-1)*k*pi/N; H(k+1)

% ex_01_11_1.m : 习题 1.11 clear all; close all; A = 220; f = 50; fs = 200; Ts=1/fs; w = 2*pi*f*Ts; n =0:31; y = A*sin(w*n); subplot(211);stem(n,y,'.'); fs = 800; Ts=1/fs; w = 2*pi*

close all,clear all ,clc; mp1=2*tan(0.2*pi/2);mp2=2*tan(0.3*pi/2);ms1=2*tan(0.1*pi/2);ms2=2*tan(0.4*pi/2);%预畸变 r=mp2-mp1; %参考频率 rp1=mp1/r;rp2=mp2/r;rs1=ms1/r;rs2=

close all,clear all,clc; N=(40-7.95)/2.286/(0.15*pi); N=round(N)+1 %N取奇数 omega=[0.15*pi,0.3*pi,0.5*pi,0.65*pi]; wc1=(omega(1)+omega(2))/2; %理想带通的截止频率 wc2=(om

matlab编程 频率采样法设计滤波器 wp=0.2*pi; ws=0.35*pi; wc=wp; N=34; alpha=(N-1)/2; k=0:N-1; wk=(2*pi)/N*k; Hk=[ones(1,4),0.5925,0.1099,zeros(1,23),-0.1099,-0.59