信号与系统阶跃信号,冲激信号
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>> y=f1.*f2-f3.*f4;
>> plot(t,y)
阶跃信号：
>> t=-8:0.01:8;
>> y=(t>=0);
>> plot(t-2,y)
>>
clear all;
t1=-0.5:0.001:0;
A=50;
A1=1/A;
n1=length(t1);
u1=zeros(1,n1);wk.baidu.com
t2=0:0.001:A1;
>> plot(t,y)
(2)[u(t)-2u(t-T)+u(t-2T)]sin( )
>> t=-8:0.01:8;
>>T=2;
>> f1=heaviside(t)-2*heaviside(t-T)-heaviside(t-2*T);
>> f2=sin((4*pi*t)/2);
>> y=f1.*f2;
信号与系统作业
班级:电气12-4姓名：江伟学号：12034470449评分
1-6
(1)[1+ ]sin(8 )
>> t=-8:0.01:8;
>> f1=1+1/2*sin(t);
>> f2=sin(8*t);
>> y=f1.*f2;
>> plot(t,y)
(2)[1+sin( )]sin(8t)
>> t=-8:0.01:8;
>> f1=1+sin(t);
>> f2=sin(8*t);
>> y=f1.*f2;
>> plot(t,y)
1-7
(1)[ ]sin( )
>> t=-8:0.01:8;
>>T=2;
>> f1=heaviside(t)-heaviside(t-T);
>> f2=sin((4*pi*t)/2);
>> y=f1.*f2;
>> y=sinc(t/pi);
>> plot(t,y)
>>
>> t=0:0.001:4;
>> T=1;
>> y=rectpuls(t-2*T,2*T);
>> plot(t,y);grid on;axis([04 -0.5 1.5]);
??? Error using ==> axis>LocSetLimits
>> plot(t,y)
1-8f(t)= u(t)- u(t- )
>> t=-8:0.01:8;
>> k=2;
>> a=2;
>>f1=exp(-a*t);
>> f2=heasivide(t);
>> f2=heaviside(t);
>> f3=exp(-a*(t-k));
>> f4=heaviside(t-k);
Vector must have 4, 6, or 8 elements.
Error in ==> axis at 96
LocSetLimits(ax(j),cur_arg);
t0=0;
u2=A*stepfun(t2,t0);
t3=A1:0.001:1;
n3=length(t3);
u3=zeros(1,n3);
t=[t1 t2 t3];
u=[u1 u2 u3];
plot(t,u)
axis([-0.5 1 0 A+2])
抽样信号
>> %sample function
>> t=-3*pi:pi/100:3*pi;
>> plot(t,y)
阶跃信号：
>> t=-8:0.01:8;
>> y=(t>=0);
>> plot(t-2,y)
>>
clear all;
t1=-0.5:0.001:0;
A=50;
A1=1/A;
n1=length(t1);
u1=zeros(1,n1);wk.baidu.com
t2=0:0.001:A1;
>> plot(t,y)
(2)[u(t)-2u(t-T)+u(t-2T)]sin( )
>> t=-8:0.01:8;
>>T=2;
>> f1=heaviside(t)-2*heaviside(t-T)-heaviside(t-2*T);
>> f2=sin((4*pi*t)/2);
>> y=f1.*f2;
信号与系统作业
班级:电气12-4姓名：江伟学号：12034470449评分
1-6
(1)[1+ ]sin(8 )
>> t=-8:0.01:8;
>> f1=1+1/2*sin(t);
>> f2=sin(8*t);
>> y=f1.*f2;
>> plot(t,y)
(2)[1+sin( )]sin(8t)
>> t=-8:0.01:8;
>> f1=1+sin(t);
>> f2=sin(8*t);
>> y=f1.*f2;
>> plot(t,y)
1-7
(1)[ ]sin( )
>> t=-8:0.01:8;
>>T=2;
>> f1=heaviside(t)-heaviside(t-T);
>> f2=sin((4*pi*t)/2);
>> y=f1.*f2;
>> y=sinc(t/pi);
>> plot(t,y)
>>
>> t=0:0.001:4;
>> T=1;
>> y=rectpuls(t-2*T,2*T);
>> plot(t,y);grid on;axis([04 -0.5 1.5]);
??? Error using ==> axis>LocSetLimits
>> plot(t,y)
1-8f(t)= u(t)- u(t- )
>> t=-8:0.01:8;
>> k=2;
>> a=2;
>>f1=exp(-a*t);
>> f2=heasivide(t);
>> f2=heaviside(t);
>> f3=exp(-a*(t-k));
>> f4=heaviside(t-k);
Vector must have 4, 6, or 8 elements.
Error in ==> axis at 96
LocSetLimits(ax(j),cur_arg);
t0=0;
u2=A*stepfun(t2,t0);
t3=A1:0.001:1;
n3=length(t3);
u3=zeros(1,n3);
t=[t1 t2 t3];
u=[u1 u2 u3];
plot(t,u)
axis([-0.5 1 0 A+2])
抽样信号
>> %sample function
>> t=-3*pi:pi/100:3*pi;