Speech/Voice recognition/combine

Development Platform:

Matlab

smoothing.m：Code Content

							clf;
R=51;
d=0.8*(rand(51,1)-0.5);%产生随即噪声
m=0:R-1;
s=2*m.*(0.9.*m);%产生未污染的信号
x=s+d';
subplot(2,1,1);
plot(m,d','r-',m,s,'g--',m,x,'b-.');
xlabel('时间序号 n');ylabel('振幅');
legend('d[n]','s[n]','x[n]');
x1=[0  0 x];x2=[0 x 0];x3=[0 0 x];
y=(x1+x2+x3)/3;
subplot(2,1,2);
plot(m,y(2:R+1),'r-',m,s,'g--');
legend('y[n]','s[n]');
xlabel('时间序号n');ylabel('振幅');

						