Plotting audio signal with number of samples
So I have a .wav file and I need to plot 5000 time samples of it. The .wav file is sampled at 44.1 kHz (which would be my fs). I initially was able to plot my signal, but then realized I needed to do it over 5000 samples. I tried doing it, but would get the error "Vectors must be the same length" when I go to plot. Original Code [x,fs]=audioread('Song.wav'); t=linspace(0,length(x)/fs,length(x)); plot(t,x) xlabel('time') ylabel('x[n]') New Code (which I thought I would only need to change my linspace, but it doesn't seem to like it) n = 5000; [x,fs]=audioread('Song.wav'); t=linspace(0,length(x)/fs,n); plot(t,x) xlabel('time') ylabel('x[n]') Appreciate any help/guidance!
Neeta Dsouza answered .
2025-11-20
n = 5000;
[x,fs]=audioread('Song.wav');
idx = 1:n;
subset = x(idx,:);
t = (idx-1)./fs;
plot(t,subset)
xlabel('time')
ylabel('x[n]')