question about sinc function

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ADNAN KIRAL 2019-9-2

评论： KALYAN ACHARJYA 2019-9-2

hi how can i get this figure ?

i have used the following eq.

by coding the following type;

but it did not work can u please help me with that ? i cannot get negative values. thanks.

    t=-511*0.005:0.01:512*0.005;
u_1=3/2*(110*sinc(110*pi*t)-60*sinc(60*pi*t));

Dimitris Kalogiros 2019-9-2

Hi Adnan

What exactly do want to plot ?

A sync(t) function ? Or function u(t) which you gave ?

ADNAN KIRAL 2019-9-2

KALYAN ACHARJYA 2019-9-2

编辑：KALYAN ACHARJYA 2019-9-2

t=-linspace(-511*0.005,512*0.005,1000)
u_t=3*(sin(2*55*pi*t)-sin(2*30*pi*t))./(2*pi*t);
plot(u_t);

Torsten 2019-9-2

This doesn't help since you still divide by 0 at t=0.

If you divide out, you get what I wrote in my answer.

KALYAN ACHARJYA 2019-9-2

@Torsten OK sir, thanks for rectifying me. I will update it.

Gratitude!

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