upsample.m

来自「数字信号处理—基于计算机的方法教材上的所有例题源程序」· M 代码 · 共 6 行

function xu = upsample(x,L)
% upsampling for a sequence with n>=0
% L - the upsampling ratio
xu = [x; zeros(L-1,length(x))];
xu = (xu(:))';