time domain and magnitude spectrum?

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Abdelrazzak rifai
Abdelrazzak rifai 2018 年 4 月 17 日
コメント済み: KALYAN ACHARJYA 2018 年 4 月 26 日
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?

回答 (1 件)

KALYAN ACHARJYA
KALYAN ACHARJYA 2018 年 4 月 17 日
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 件のコメント
Abdelrazzak rifai
Abdelrazzak rifai 2018 年 4 月 17 日
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 2018 年 4 月 26 日
Is your problem solved?

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