time domain and magnitude spectrum?

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Abdelrazzak rifai
Abdelrazzak rifai am 17 Apr. 2018
Kommentiert: KALYAN ACHARJYA am 26 Apr. 2018
A=0.5;
f1=6;
f2=10;
fs=32*f1;
fs2=32*f2;
phase=16;
t1=0:1/fs:2-1/fs;
t2=1:2/fs2:3-1/fs2;
phi=phase*pi/180;
x1=A*cos(2*pi*f1*t1+phi);
subplot(2,1,1);
plot(t1,x1);
hold on;
stem(t1,x1);
xlabel('time s');
ylabel('Amplitude')
x2=A*cos(2*pi*f2*t2+phi);
subplot(2,1,2);
plot(t2,x2);
hold on;
stem(t2,x2);
xlabel('time s');
ylabel('Amplitude')
  1. sum of cosine wave with different frequenciesbuild the time domain
  2. build it with the magnitude spectrumso my code is correct or wrong?

Antworten (1)

KALYAN ACHARJYA
KALYAN ACHARJYA am 17 Apr. 2018
OK What you looking for. As per your code, I have not seen any error. You have generated two cosine signal having frequencies in 6 & 10 with amplitude 0.5.
  2 Kommentare
Abdelrazzak rifai
Abdelrazzak rifai am 17 Apr. 2018
my professor asked us the following question:
  • sum of cosine wave with different frequencies
  • build the time domain
  • build it with the magnitude spectrum
  • so my code is correct or wrong? please i need it tomorrow
KALYAN ACHARJYA
KALYAN ACHARJYA am 26 Apr. 2018
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