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www.eeworm.com/read/359349/10154194
m duality.m
%==========================================================================
% 傅里叶变换 程序名：CTFT
% 本程序是采用数值积分的方法计算实信号的傅里叶变换。
% 对信号的要求是：
% 1、信号是时限信号，或者信号在时间t大于某一数值时，信号的值已经衰
www.eeworm.com/read/359349/10154207
m fir_design_win.m
% Name:FIR_design_win.m
clear,close all;
f=20000;%input('Type in the samping fequency f=:');
fp=input('Type in the passband edge frequency (in Hz) fp=');
fs=input('Type in the passband edge freque
www.eeworm.com/read/359349/10154211
m pm.m
close all,clear;
kp=1;
t=-10:0.01:10;
x=cos(0.5*pi*t);
x1=sin(0.5*pi*t)/0.5;
c=cos(2*pi*t+x1);
subplot(221)
plot(t,x)
axis([-6,6,-1.2,1.2])
title('The modulating signal x(t)')
grid on;
subp
www.eeworm.com/read/359349/10154276
m rectangular.m
% Name:Rectangular.m
clear
L=input('Type in the length N=');
n=0:L-1;
w=u(n)-u(n-L);
x=0.25*sin(0.25*pi*(n-(L-1)/2+eps))./(0.25*pi*(n-(L-1)/2+eps)).*w;
%=========================================
www.eeworm.com/read/359349/10154294
m experiment_1_2.m
%====================================================================
% Program name: experiment_1_2.m for Digital Signal Processing
%================================================================
www.eeworm.com/read/359349/10154296
m lp_cheby_digital.m
% Name:lp_cheby_digital
%====================================================================
% This program is used to
% design a type 1 chebyshev lowpass digital filter
% The specifications are
www.eeworm.com/read/359349/10154298
m ctft.m
%==========================================================================
% 傅里叶变换 程序名：CTFT
% 本程序是采用数值积分的方法计算实信号的傅里叶变换。
% 对信号的要求是：
% 1、信号是时限信号，或者信号在时间t大于某一数值时，信号的值已经衰
www.eeworm.com/read/359349/10154307
m program3_1.m
t=0:0.1:20;
w1=1;w2=4;w3=8;
e1=0.5*cos(w1*t)+1*cos(w2*t+pi/3)+0*cos(w3*t+pi/2);
e2=1*cos(w1*t)+0.5*cos(w2*t+pi/3)+0*cos(w3*t+pi/2);
e3=0.5*cos(w1*t)+1*cos(w2*t+pi/3)+0.5*cos(w3*t+pi/2);
subplot
www.eeworm.com/read/163276/10167172
cpp lag.cpp
#include
using namespace std;
#include
#include
#define n 4
#define pi 3.1415926
void main()
{double x[n+1],y[n+1],t,x1,y1; int i,j,k;
x[0]=0;x[1]=pi/6;x[2]=pi/4;x[
www.eeworm.com/read/163199/10171132
m chap3_11f.m
function [y]=func(x1,x2,x3)
for l1=1:1:3
gs1=-[(x1+pi/6-(l1-1)*pi/6)/(pi/12)]^2;
u1(l1)=exp(gs1);
end
for l2=1:1:3
gs2=-[(x2+pi/6-(l2-1)*pi/6)/(pi/12)]^2;
u2(l2)=exp(gs2);
end