Fourier Transform of a random Signal

3 次查看（过去 30 天）
Kutlu Yigitturk
Kutlu Yigitturk 2021-6-1
回答： Sulaymon Eshkabilov 2021-6-1
t = 0 : 0.001 : 2;
x = (2*(exp(-4*t))).*(cos(10*t).*unit(t))
subplot(2,1,1)
plot(t,x)
grid
I wrote such a code for this signal, but I don't know how to get the fourier transform of this signal. Thank you very much in advance for your help.

请先登录，再回答此问题。

采纳的回答

Sulaymon Eshkabilov
Hi,
Here is the complete code:
t = 0 : 0.001 : 2;
x = (2*(exp(-4*t))).*(cos(10*t).*heaviside(t));
L= numel(x);
Y = fft(x);
M2 = abs(Y/L);
M1 = M2(1:L/2+1);
M1(2:end-1) = 2*M1(2:end-1);
dt=.001;
Fs = 1/dt;
f = Fs*(0:(L/2))/L;
subplot(2,1,1)
plot(t,x)
grid on
subplot(212)
plot(f, abs(M1))
xlim([0, 50]), grid on
xlabel('f, [Hz]')
ylabel('|X|')

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Fourier Analysis and Filtering 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by