Hi guys!
I have been trying to make a chirp function in which the frequency is changing randomly through the time
my parameters are this t1=0 t2=1 f1=0 f2=60
I have tried the chirp function of matlab, however, the frequency is linearly increasing but I also want that it could decrease.
Any ideas?
Thanks in advance
ANSWER
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It's not really a chirp if you want to have the frequencies vary more or less randomly up and down. But anyway, to make a signal with random frequencies:
t = linspace(0, 100, 400);
amplitude = 3;
% Make random frequencies.
frequency = .04 + .04 * rand(1, length(t));
% Construct waveform.
y = amplitude * cos(2 .* pi .* frequency .* t);
plot(t, y, 'b-');
grid on;
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0, 0, 1, 1]);
Matlabsolutions.com provide latest MatLab Homework Help,MatLab Assignment Help for students, engineers and researchers in Multiple Branches like ECE, EEE, CSE, Mechanical, Civil with 100% output.Matlab Code for B.E, B.Tech,M.E,M.Tech, Ph.D. Scholars with 100% privacy guaranteed. Get MATLAB projects with source code for your learning and research.
It's not really a chirp if you want to have the frequencies vary more or less randomly up and down. But anyway, to make a signal with random frequencies:
t = linspace(0, 100, 400); amplitude = 3; % Make random frequencies. frequency = .04 + .04 * rand(1, length(t)); % Construct waveform. y = amplitude * cos(2 .* pi .* frequency .* t); plot(t, y, 'b-'); grid on; % Enlarge figure to full screen. set(gcf, 'Units', 'Normalized', 'OuterPosition', [0, 0, 1, 1]);
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