MATLAB: How to create sine wave with 50hz frequency for 1001 data points and sampling frequency 250Hz

digital signal processing

how to create sine wave with 50hz frequency for 1001 data points and sampling frequency 250Hz and change its amplitude?

Best Answer

Hint:

Use linspace () to create t. Then

y = amplitude * sin(2 * pi * freq * t)

Come back with your code if you still have trouble.

Related Solutions

MATLAB: I want to create 2 sinusoid signals and adding it then create time domain of it first signal amplitude 110 50hz second signal amplitude 10 250hz

t = (0:0.001:1); 
y1 = 110*sin(2*pi*50*t);
y2 = 10*sin(2*pi*250*t);
plot(t,y1,t,y2)

MATLAB: Plotting sine wave using rad/samp

Almost correct. You need to change your r vector to get the correct time vector, because you only want to plot the sine wave for 4 seconds.

 r = linspace(0,stopTime,stopSample);

linspace creates a vector with evenly spaced points between 0 and stopTime. stopSample is the number of points. The plotted data is now not even a fourth of a full sine wave which makes sense, because your frequency is 0.05 Hz ( pi/10/(2*pi) ) which makes a full sine wave take 20 seconds.

Best Answer

Related Solutions

MATLAB: I want to create 2 sinusoid signals and adding it then create time domain of it first signal amplitude 110 50hz second signal amplitude 10 250hz

MATLAB: Plotting sine wave using rad/samp

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