Matlab doesn't recognise the function dtf
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Hey guys,
MATLAB doesn't seem to recognise the function dtf, any ideas on what to do? This is my code so far.
Any help would be amazing.
Annabell
n = [0:1:99];
x = cos(0.48*pi*n)+cos(0.52*pi*n);
n1 = [0:1:9];
y1 = x(1:1:10);
subplot(2,1,1);
stem(n1,y1);
title('signal x(n), 0 <= n <= 9');
xlabel('n')
Y1 = dft(y1,10);
magY1 = abs(Y1(1:1:6));
k1 = 0:1:5;
w1 = 2*pi/10*k1;
subplot(2,1,2);
stem(w1/pi,magY1);
title('DTFT Magnitude');
xlabel('frequency (pi)')
采纳的回答
Ameer Hamza
2020-6-14
编辑：Ameer Hamza
2020-6-14
In MATLAB, DFT of a signal can be calculated using fft() function: https://www.mathworks.com/help/matlab/ref/fft.html. FFT is an efficient algorithm to calculate DFT.
Y1 = fft(y1,10);
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