please how to write this in matlab?
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fourier function
- define a sum of cosine waves f=8 HZ
- build it's plot in time domain
- build the plot of it's magnitude spectrumi don't understand how to use the arry in matlab :( :(
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Ngoc Thanh Hung Bui
am 16 Apr. 2018
I dont really understand the problem, better more specifically
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KALYAN ACHARJYA
am 16 Apr. 2018
Bearbeitet: KALYAN ACHARJYA
am 16 Apr. 2018
% Are you looking for this one t=0:1:115; fs=500 % Assumed Sampling Frequency f=8; % Given 8 Hz cw=cos(2*pi*f/fs*t); subplot(121);stem(cw,'r'); title('Time Domain'); %Read in Signal Processing Book How to find Magnitute Response fftLength=512; sigLength=length(cw); win=rectwin(sigLength)'; % Window Selection 'Ractangular' y=fft(cw.*win,fftLength); length=fftLength/2+1; % Magnitude Response subplot(122);plot([1:length]*fs/(2*length),abs(y(1:length))); title('Magnitude Response');
![](/matlabcentral/answers/uploaded_files/113342/cos.jpg)
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