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help generate chirp signal

조회 수: 1 (최근 30일)
Dhananjay Singh
Dhananjay Singh 2019년 2월 25일
hi, i want to generate a chirp signal with frequency going from 10Khz to 100Khz. Currently i am using the following code to generate chirp where frequency goes from 100 to 500hz. But as you can see the graph, the plot is not a continuous plot, i want a continuous up chirp. also, if i change the values f1, f2 in the code below the output is not correct.
code:
Fs=1000;
tf=2;
t=0:1/Fs:tf-1/Fs;
f1=100;
f2=400;
semi_t=0:1/Fs:(tf/2-1/Fs);
sl=2*(f2-f1/2);
f1=f1*semi_t+(sl.*semi_t/2);
f2=f1(end)+f2*semi_t-sl.*semi_t/2;
f=[f1 f2];
y=1.33*cos(2*pi*f.*t);
plot(t,y)
12.jpg

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