fouadalnoor
Member
Hello guys,
Can anyone please explain to me how to sketch the amplitude spectrum of a message signal as shown below:
Vm(t) = 3cos(20Πt+Π/4)+2sin(60Πt)-cos(100Πt)
I know how to do it if we only have one trig function such as:
Vm(t) = Vmcos(2Πfmt)
But I just can't think of a way to draw the one above. Do I have to superimpose all the trigonometric functions into one function and THEN do it?
An example is attached.
Hope you can help.
Fouad.
Can anyone please explain to me how to sketch the amplitude spectrum of a message signal as shown below:
Vm(t) = 3cos(20Πt+Π/4)+2sin(60Πt)-cos(100Πt)
I know how to do it if we only have one trig function such as:
Vm(t) = Vmcos(2Πfmt)
But I just can't think of a way to draw the one above. Do I have to superimpose all the trigonometric functions into one function and THEN do it?
An example is attached.
Hope you can help.
Fouad.
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