sigout.m

数字信号处理基于matlab 文件内容 /conv(卷积部分) dupconv 重叠保留法 freqcirconv 频域圆周卷积 freqconv 频域卷积 timecirconv

function [ xn ] = sigout( name,para1,para2,para3,para4 )
%SIGOUT Summary of this function goes here
%   Detailed explanation goes here
switch(name)
    case 'deta'
        N=para1;
        n0=para2;
        xn=zeros(1,N);
        xn(n0+1)=1;
    case 'jieyue'
        N=para1;
        n0=para2;
        xn=zeros(1,n0);
        xn=[xn ones(1,N-n0)];
    case 'gate'
        n1=para1;
        n2=para2;
        n3=para3;
        xn1=zeros(1,n1);
        xn2=ones(1,n2-n1+1);
        xn3=zeros(1,n3-n2);
        xn=[xn1 xn2 xn3];
    case 'sin'
        amp=para1;
        freq=para2;
        time=para3;
        samp=para4;
        samptime=1/samp;
        t=0:samptime:time;
        xn=amp*sin(2*pi*freq*t);
    case 'square'
        amp=para1;
        freq=para2;
        time=para3;
        samp=para4;
        samptime=1/samp;
        t=0:samptime:time;
        xn=amp*square(2*pi*freq*t);
    case 'rand'
        len=para1;
        xn=rand(1,len);
    case 'randn'
        len=para1;
        xn=randn(1,len);
    case 'custom'
        opera=para1;
        t1=para2;
        t2=para3;
        sampfreq=para4;
        samptime=1/sampfreq;
        t=t1:samptime:t2;
        xn=subs(opera,t);
end