DFT- Discrete Fourier Transform (basic, formula & graph)

[@ShrenikJain]

ANY DOUBT OR HELP CONNECT WITH ME BY FOLLOWING LINKS facebook link : facebook.com/engineeringhacks/ quora link : www.quora.com/profile/Shrenik-Jain-51

[@vakaharshini6805]

For who , don't know how to find the angle , here is the explanation Tan^-1{img[X(K)]÷real[X(K)]} That means Tan inverse of imaginary value by real value

[@aswina646]

Sir, how did you find the angle X(k) at the end???

[@ShrenikJain]

get BEST NOTES for FREE !! fill this form - docs.google.com/forms/d/e/1FAIpQLSeurlYOI6yE0e8eeUyfw8z5Pli0cdfKE26Jn_8Ma2u4qSufOg/viewform

[@nagasundra4127]

But how to get magnitude and phase values

[@amishamundra2000]

Yes how to find out because your ans is wrong PlZ realpy it

[@jamisonjude4944]

i realize I am kind of randomly asking but do anyone know of a good site to stream new series online?

[@emilianoaidan7091]

@Jamison Jude Lately I have been using flixzone. Just google for it :)

[@yusufevan9533]

@Jamison Jude i watch on Flixzone. Just search on google for it :)

[@santinovihaan1258]

@Jamison Jude I use Flixzone. You can find it by googling :)

[@sifatsanjeen1078]

I wish I saw these videos earlier!! You should teach all the courses! Thank you for the amazing videos! SUPER HELPFUL

[@sachinbirhade]

Theres no proper explanation for the steps u r doing sir, how do u generate the angles? U know the answer but as a viewer we don't know!!

[@nomad_diaries86]

so lucky to have a mentor like you for ece.

[@ShrenikJain]

+varthakavi sai Ty for appreciating work 😊 Best of luck for GATE exam and hope you get your dream college :)

[@nomad_diaries86]

Shrenik Jain tnq so much bayya

[@aswithasai4015]

there will be a 1/N na???

[@monikachauhan6862]

u should explain in more detail ...u just give direct n solved values .

[@kashirajvkkalshetti3498]

N = input('Enter the the value of N(Value of N in N-Point DFT)'); x = input('Enter the sequence for which DFT is to be calculated'); n=[0:1:N-1]; k=[0:1:N-1]; WN=exp(-1j*2*pi/N); % twiddle factor nk=n'*k; WNnk=WN.^nk; Xk=x*WNnk; MagX=abs(Xk) % Magnitude of calculated DFT PhaseX=angle(Xk)*180/pi % Phase of the calculated DFT figure(1); subplot(2,1,1); plot(k,MagX); subplot(2,1,2); plot(k,PhaseX); -------------*****-------------- OUTPUT Enter the the value of N(Value of N in N-Point DFT)4 Enter the sequence for which DFT is to be calculated [1 2 3 4] MagX = 10.0000 2.8284 2.0000 2.8284 PhaseX = 0 135.0000 -180.0000 -135.0000 Respected sir why phase is getting like this can u explain

[@premchandyadav5013]

Thanks

[@alibinmahfodh7348]

You R a legend , thank you so much for the video .

[@newhope5729]

Please can you tell me how he calculated angles in example 2 please?

[@krishnapalsinghrathore4997]

Sir if u get time plz make video on multivibrators and ADC DAC

[@ShrenikJain]

Krishnapal singh Rathore sure

[@krishnapalsinghrathore4997]

Shrenik Jain thank you very much , i have followed you on quora. ☺ 😊

[@ShrenikJain]

Krishnapal singh Rathore thanks​😊😎

[@jaijeetkumarjha1317]

Fft ka video nahi hai kya

[@ShrenikJain]

Jaijeet kumar Hai video Type: fft by shrenik jain

[@vaibhavgoel1473]

sir plz make videos on ditfft diffft topics of digital signal processing and also other subjects of electronics branch btech

[@ShrenikJain]

which subjects you want ? any specific ?

[@vaibhavgoel1473]

8051 n msp430 microcontrollers assembly programming

[@ShrenikJain]

microcontroller already bharat acharya channel is their and he is best at it .. hope you find it useful

[@vaibhavgoel1473]

oh i dint know about it

[@vaibhavgoel1473]

he had made on 8086mp not microcontrollerd

[@jaijeetkumarjha1317]

Nice videos sir

[@ShrenikJain]

ty :)

[@premchandyadav5013]

Tell me process to find out

[@prasad5337]

hey n1 is 0 how did u get 1

[@PathakTutorials]

sir you are the best..

[@ShrenikJain]

+aman pathak Ty 😃 Share with your friends too 😊😊

[@PathakTutorials]

yaa offcourse..

[@PathakTutorials]

fb id please???

[@ShrenikJain]

+aman pathak FACEBOOK & QUORA id are in discription

[@NagechaO]

Hi, mate! I didn't understand how you found x(1) x(2) , pls help someone

[@newhope5729]

Please can you tell me how he calculated angles in example 2 please?

[@newhope5729]

8:41

[@premchandyadav5013]

Sir ap angle ki value kaise find karte hain

[@ShrenikJain]

a+ib k form meh jab equation aati h toh.... calci meh daalo and convert karo polar form meh :)

[@AmarNath-qp8le]

Plz upload instrumentation videos for semester 4

[@ShrenikJain]

sure :) cheers!!

[@zaffariqbal3671]

Sir what is the difference between dtft and dft..

[@anandm.a1363]

DTFT is discrete time fourier transform denoted by X(w) DTFT is used for frequency analysis of discrete signal But frequency domain (w) of DTFT is continuos so the singnal cannot be processed by digital signal processor So to over come this we choose DFT, DFT is obtain by sampling DTFT at N samples so that the frequency domain becomes discrete.. Now the signal can be processed by digital processor.. prblm solved.. For this purpose DFT is used..✌

[@kashirajvkkalshetti3498]

sirji nice video but one doubt if dft sequence is getting [10,-2+2j,-2,-2+2j] this in matlab i m getting value of angle 0,135,180,-135 ca n u answer my question?

[@lokeswarrao9787]

Shrenik sir... Is there any subject which u don't know🙄

[@newhope5729]

Please can you tell me how he calculated angles in example 2 please?

[@premchandyadav5013]

Sir error aa raha hai calc me

[@ShrenikJain]

ok then i have to make video on that as well

[@nekroticknight1802]

there is no proper explanation , u have skipped the process to calculate to find X(1) and also not shown the process to calc. the X(K). so please remake this video with proper explanation.

[@ArunKumar-jg8gx]

Hag diya hai bhai pura isne

[@1104944846]

Bhai Aese kuch smjh nhi aa rha

[@ArunKumar-jg8gx]

Hag diye pura....bahot gussa aa rha hai 😡