c3_upsampex.m

Matlab实现对正弦波采样的线性内插

% File; c3_upsampex.m
% 对正选波采样的内插
M = 6;
h = c3_lininterp(M);
t = 0:10;
tu = 0:60;
x = sin(2*pi*t/10);
xu = c3_upsample(x,M);
subplot(3,1,1)
stem(t,x,'k.')
ylabel('x')
subplot(3,1,2)
stem(tu,xu,'k.')
ylabel('xu')
xi = conv(h,xu);
subplot(3,1,3)
stem(xi,'k.')
ylabel('xi')