代码搜索结果

%滤除cos(2*pi/3*n) omegap=3*pi/5;Apmax=3; omegar=3*pi/8;Armin=50; T=5*pi*10^(-6); wp=[omegap/pi];wr=[omegar/pi]; [N,wc]=buttord(wp,wr,Apmax,Armin,'s'); [b,a]=butter(N,wc,'high'); sysl=tf(b,a) w=

%滤除1+cos((2*pi*n)/3),保留cos((pi*n)/4) omegap1=(3*pi)/16;omegap2=(5*pi)/16;Apmax=1; omegar1=(1*pi)/16;omegar2=(5*pi)/9;Armin=50; T=5*pi*10^(-6); wp=[omegap1/pi,omegap2/pi];wr=[omegar1/pi,omegar2/pi]

%滤除cos((pi*n)/4),保留1+cos((2*pi*n)/3) omegap1=(3*pi)/16;omegap2=(5*pi)/16;Apmax=1; omegar1=(1*pi)/16;omegar2=(5*pi)/9;Armin=50; T=5*pi*10^(-6); wp=[omegap1/pi,omegap2/pi];wr=[omegar1/pi,omegar2/pi]

%滤除cos(2*pi/3*n) omegap=pi/4;Apmax=3; omegar=2/3*pi;Armin=50; T=5*pi*10^(-6); wp=[omegap/pi];wr=[omegar/pi]; [N,wc]=buttord(wp,wr,Apmax,Armin,'s'); [b,a]=butter(N,wc,'low'); sysl=tf(b,a) w=lin

function ex0101() x=0:pi/15:2*pi; y1=0.5*x.^2; y2=10*sin(x); plot(x,y1,'r.-',x,y2); grid xlabel('variable x') ylabel('variable y') title('x^2 and sin(x)'); text(6.2,-5.5,'sin(x)'); text(6.2,

// Section 7.3.1 // $ CC ptrswap.cpp main3_1b.cpp /* Before ptrswap(): pi: 10 pj: 20 After ptrswap(): pi: 20 pj: 10 */ #include using std::cout; using std::en

// #include // #include #include #include #include /***** pi: 4 *pi: 4 st1: 12 st2: 12 ps: 4 *ps: 12 short : 2 short* : 4

clear clc subplot(2,2,1), fplot('humps',[0 1]) subplot(2,2,2), fplot('abs(exp(-j*x*(0:9))*ones(10,1))',[0 2*pi]) subplot(2,2,3), fplot('[tan(x),sin(x),cos(x)]',2*pi*[-1 1 -1 1]) subplot(2,2,4), f

%sjbh.m function sjbh1(m) x=-1:0.01:10; y1=sin(x); plot(x,y1) axis([-1 10 -2 2]) grid legend('sin(x)') pause(2) legend off legend('将y=sin(x)的横坐标收缩至原来的1/2') %hold on %theax=axis; pause %y