www.gusucode.com > signal 案例源码程序 matlab代码 > signal/InterpolateASignalExample.m
%% Interpolate a Signal % Create a sinusoidal signal sampled at 1 kHz. Interpolate it by a factor % of four. % Copyright 2015 The MathWorks, Inc. %% t = 0:0.001:1; x = sin(2*pi*30*t) + sin(2*pi*60*t); y = interp(x,4); %% % Plot the original and interpolated signals. subplot 211 stem(0:30,x(1:31),'filled','markersize',3) grid on xlabel 'Sample number',ylabel Original subplot 212 stem(0:120,y(1:121),'filled','markersize',3) grid on xlabel 'Sample number',ylabel Interpolated