#1 (DTFT)Discrete Time Fourier Transform- (examples and solutions)

[@ShrenikJain]

Shrenik Jain - Study Simplified (App): play.google.com/store/apps/details?id=co.kevin.nxpgd

[@saadshaikh1867]

Can you please explain the manipulation step in detail...?

[@MS-oy4vo]

He "factors" out the sqrt of right term, or (right term)^1/2

[@KING.GAMING755]

Very clear-thank you sir

[@ChickenJY]

I agree with Shaikh, can you kindly explain the manipulation part in detailed ?

[@zezo2895]

Thank you sir❤

[@nicoledriver150]

Hi. Why do you divide (N/2)?

[@CarlosMarin-lp9xe]

Parcero muchas gracias, me sirvió tu vídeo.

[@geetayadav1441]

Thank you so much sir

[@preet2175]

Sir if x(n)=Sin(won)u(n) After applying dtft Do I need to do Manipulation

[@matthewpowell1366]

e^(i/2)-e^(-i/2) = 2j so shouldn't there only be one sin? i think the answer is e^(-2jw)*sin(5w/2)

[@dvoorganisation459]

Thank you Sir

[@zaffariqbal3671]

Sir why do we require magnitude and phase after dtft..please sir clarify

[@ZephenTheGreat42]

because the DTFT is a way to convert signals from the time domain to the frequency domain. In time domain we represent a value of intensity vs a given time. but in frequency domain we represent a signal as a magnitude and a phase. So the DTFT is not complete until you have a magnitude and phase angle. It would be like going to the bank with Canadian dollars, asking for Mexican Pesos and then the teller gives you US Dollars because they stopped halfway.

[@ambushtunes]

Got lost in the manipulation of n

[@mohanraikwar1338]

thanks a lot bhai

[@humaizmalik]

5/2 ? How did that happen ?

[@n_e_y_o]

Because he takes out half. If you multiply it back in just try it you will get e^(5/2-5/2) which is e^(0) which is 1. You simply take out half.

[@socratesuffer2765]

where is the 2J ?

[@niranjanchinnu2813]

Bro u forgot 2j?

[@MrMayo05]

2j gets cancelled...it's there in numerator as well as denominator

[@shaikshahid173]

Bro how n will be 5 4-1 it's 3 know

[@SANAKHAN-tl2rq]

that's what I'm thinking ans 3 is right or wrong

[@souravsanyal7154]

how you can solve this when n-1=5 ? i mean that how?

[@elamaranm5698]

instead of n, we are introducing N... N-1=n N-1=4 N=5

[@foodlover2656]

N-1= 5 , where n=4 4-1=5 how it's possible In which school u learn this kind of substrate

[@thomasbowe3471]

It should be noted that N - 1 = 4 was the problem solving this for N would be N = 5

[@chimponkoman]

If you don't realize that n and N are two separate things... you're going to be in for a really bad time. Because crap like that is really common in physics.

[@humaizmalik]

Our schools are different, and I used to wonder why aren't there idiots in my school.. well, they don't get admission here 😂😂

[@neffex76]

@@chimponkoman lol true

[@SANAKHAN-tl2rq]

N-1 n ka value hai 4 Abh n = -1 shift hua to + hotha nah tho N=4+1 =5