i need a Matlab function to generate a sinusoidal sequence,

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[Aash]

[KSSV]

Read about sin. What exactly is your question?

[Aash]

x[n] = Asin(w0n + phi) The function should accept the desired length N, amplitude A, angular frequency W0, and phase phi, where 0 ≤ W0 ≤ pi and 0 < phi ≤ pi.

[Aash]

this is my question. I hope someone can answer

[KSSV]

Read about Sin.it is a striaght forward attempt.

[Walter Roberson]

Do you mean

x = A * sin(W0 + phi)

But what is the length N affecting? You kind of imply that it is affecting the length of the angular frequency, but you also say that angular frequency is given. Is it a starting angular frequency? If so then how far apart should the other angular frequencies be?

[Aash]

this is what i want. x = A* sin(w0 n +phi).

The function should accept the desired length n, amplitude A, angular frequency W0, and phase phi, where 0 ≤ W0 ≤ pi and 0 < phi ≤ pi.

[Walter Roberson]

Is that an implied multiplication between the w0 and the n?

A * sin(w0 * n + phi)

? If so then how is the n there intended to relate to "the desired length n" ?

What is supposed to be length n? n is the number of full cycles to show? n is to be the number of samples? n is to be the length in centimeters of the display on the graph??

[Aash]

x[n] = A* (w0 * n + phi)

yes there is a multiplication between them

[Walter Roberson]

What is supposed to be length n? n is the number of full cycles to show? n is to be the number of samples? n is to be the length in centimeters of the display on the graph??

[Aash]

n is the time index in x axis of graph. attached is the graph I need to create

[Walter Roberson]

That example plot violates the constraints given in the equation. In the equation, 0 < W0 < pi, but the example plot has W0 = 1.2 * pi

[Aash]

(a) Write a Matlab function to generate a sinusoidal sequence, x[n] = A sin(w0 * n+ phi) . The function should accept the desired length N, amplitude A, angular frequency w0, and phase phi, where 0 <

[Aash]

This is the whole question

[Walter Roberson]

I am not sure what you need me to do about this. Do you need me to call the person who set the assignment for you and point out to them that the question is wrong, that it clearly requires that w0 be less than pi, but also requires that w0 be 1.2 pi? If so then I will need to know their name and phone number and the times I can expect to reach them (and the time zone.) (Also, if I will need an interpreter, I will need to know that.)

Answer 1

[Walter Roberson]

stem(0:40,sqrt(3)*sin(1.2*pi*(0:40)+.3))