how can i vary the frequency of the signal

4 views (last 30 days)
i want to have a signal with variable frequency but i don't know how to do that. the code is
A=240;
d=6;
C=55*pi;
x=[0:1/100:10];
s=x.^3;
a=-(s.*d);
c=x.*C;
b=cos(c);
t=b.*(x.*(A*exp(a))); %the signal

Accepted Answer

hosein Javan
hosein Javan on 13 Aug 2020
A=240;
d=6;
x=0:1e-4:1;
s=x.^3;
a=-(s.*d);
minfreq = 10; % minimum frequency(Hz)
maxfreq = 200; % maximum frequency(Hz)
w = 2*pi*(linspace(minfreq,maxfreq,length(x))); % array of linear-spaced frequency data vs x
b=cos(w.*x);
t=b.*(x.*(A*exp(a))); %the signal
plot(x,t)

More Answers (1)

David Hill
David Hill on 13 Aug 2020
A=240;
d=6;
x=[0:1/100:10];
s=x.^3;
a=-(s.*d);
t=@(f)cos(f*x).*(x.*(A*exp(a))); %the signal
plot(x,t(55*pi));

Categories

Find more on Predictive Maintenance Toolbox in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!