generating aperodic impulse train or triangular pulse or rectangular pulse

Hello all,

I want to generate aperodic signal of type impulse train or triangular pulse train or rectangular pulses train. i.e. time period b/w samples should vary for every 2 samples. I want to find frequency content from that signal by using FFT. I am new to matlab coding. Could anyone plz explain me how to generate the signal... Rest FFT and signal analysis i can do.

Thanks in advance.

[LAKSHMAN]

Does anyone have idea about this ?? Plz help me..

[Rick Rosson]

Do you have the Signal Processing Toolbox?

[LAKSHMAN]

yes i have.. but when i searched for any wave it is showing only periodic signals..

Answer 1

[Image Analyst]

Attached is my triangle wave demo. Feel free to adapt it as needed.

Answer 2

[Rick Rosson]

doc rectpuls
doc tripuls
doc pulstran

[LAKSHMAN]

but when i searched for any wave it is showing only periodic signals.. Could you plz mention how to take time aperiodic samples...

[Rick Rosson]

Please read the doc. Then try it.

[LAKSHMAN]

I have studied these docs.. Understood more compared to previous.. Thank you Rick..

Answer 3

[W. Owen Brimijoin]

It's a bit hard to know exactly what parameters you are after, but if all you are doing is making a click train with randomly chosen interstimulus intervals (ISI), then you may be able to get there by creating a vector with randomly chosen integers drawn uniformly from a range.

isi_range = [10 100]; %range from smallest to largest isi (in samples)
num_clicks = 100; %number of clicks you want

%figure out when your clicks are:
click_times = cumsum(randi(isi_range,num_clicks,1));

%set an empty variable to 1 at those points:
signal(click_times) = 1;