Generate Alternating Tones Based On Number Of Cycles

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Elijah Hamilton 2022-11-2

编辑： Davide Masiello 2022-11-2

Hi, I need to generate a sine wave that alternates between 5 cycles of 651hz, and 4 cycles of 465hz, 100 times.

My current code works, but the frequency gets rounded to a frequency divisible by 48000.

Can I get any help?

Elijah Hamilton 2022-11-2

The code generates a single cycle of a square wave, at a given frequency in hertz.

48000 is the sampling rate in hertz.

465hz would be "rouned" to 461.5384615384615hz.

function f = wave(n)
	num = 48000 * (0.5 / n);
	f(1:num) = 1;
	f = [f, f.*-1];
end

Davide Masiello 2022-11-2

So you want to generate a square wave.

Davide Masiello 2022-11-2

编辑：Davide Masiello 2022-11-2

I am still quite unsure if this is what you are asking, but I will give it a go.

[t,w] = wave(465);

plot(t,w)

function [t,f] = wave(freq)

t = linspace(0,1/freq,48000);

f(1:48000/2) = 1;

f(48000/2+1:48000) = -1;

end

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