Lecture - 9 Discrete Fourier Transform (DFT)

Lecture Series on Digital Signal Processing by Prof.S. C Dutta Roy, Department of Electrical Engineering, IIT Delhi. For More details on NPTEL visit nptel.iitm.ac.in

[@Funkymix18]

this professor is amazing. very clear .he also seems very kind :)

[@arnav17]

I tried understanding this concept from many reputed books but couldn't get it into my head. THIS helped a lot. Thank you!

[@sarvariabhinav]

this guy is a legend... google this fellow, numerous awards and accomplishments, still a cool guy

[@shahzaibishaque]

What's his name ?

[@saicharanmarrivada5077]

@@shahzaibishaque S.C Dutta Roy

[@derekhallman9770]

Fantastic video. I didn't know I could love learning Fourier transforms so much

[@kumarwork]

Prof is so knowledgeable. Wonderful flow of lectures :)

[@jiwann4213]

great explanation. Thank you. My professor always shows the diagrams in rush and says that he can't finish the course. But it seems one period-class can cover so many things, so clearly.

[@KnowledgeAmplifier1]

Although 5 years over (haha) ,but if you want videos on dsp , check this--> kzbin.info/aero/PLjfRmoYoxpNr3w6baU91ZM6QL0obULPig

[@AaaRrrLllUS]

Thanks a lot.. Greetings all the way from US..

[@onevim]

awesome! i love this lecturer! he explains everything very clearly and thoroughly.

[@vickyverma2922]

very helpful for me because i have project in this field. thats to the teaches for such a valuable lectures

[@DiosDeNumeros]

Muchas gracias a quien haya subido esto, me ha ayudad muchísimo

[@mostolesman]

Thank you VERY MUCH from Spain

[@iisshhaannddaavvee]

Great flow of teaching!!

[@simpleworld542]

Thank You Professor. It seems crystal clear.

[@lampuiho]

My school taught me fourier transform before anything about noise, anti-aliasing problems so I had no idea what fourier transform was. Until recently, I saw something about spacial anti-aliasing and read some of the programming and the results of those filters. I understood what it does.

[@studology67]

@25:30 when l=n so l-n = 0 ....W^(k(l-n)) will be 1 thus summation will be N, why this professor is saying to apply L hospital rule

[@mr.rachetphilanthrophist601]

It came from Z transform version after sampling it. In z transforn in numerator you have terms like [1-z^(-n) ]/[1-z^-1] which tends to N as z goes to 1. Just put z=e^jw and w=2pink/N

[@adityasahu96]

thank you god for these lectures !! eye opening

[@226ori]

Love IT! Slow and Clear

[@RLDacademyGATEeceAndAdvanced]

Excellent video

[@mostafamohammadifard2893]

very great lecture of prof Roy . Thanks

[@VishalKumar-xu7gh]

very nice and great explanation thanks sir

[@hana0502]

amazing and quite beneficial

[@game-f-un-limitedgamer8958]

Intro music reminded me of Loony Toons show. Nice explaination!

[@nikitakorgaonkar8253]

outstanding video thank u sir

[@bonaku20]

Thanks for video. Great help.

[@jaic1059]

Great explanation

[@10marcosgomes]

Watch at 1.5X to save time

[@nateburd]

+Marcos Gomes Thank you.

[@94D33M]

+Marcos Gomes sometimes i watch lectures at x2 lol....i got no patience...XD

[@chaitanyavamsi45]

how to do it?

[@10marcosgomes]

hover your mouse over the bottom right corner of the video, youll see a gear shaped icon. click and find speed

[@bhaswatmandal8751]

I watch at 2x and it is just perfect

[@LimeBall]

Brilliant!

[@vishnutejal8337]

Awesome !

[@MrMokaBoka]

Thanks!!

[@lifeboy6969]

DFT strats at 00:08:45

[@raidenms]

THANK YOU

[@matbymay]

perfect definition

[@mr.rachetphilanthrophist601]

X(k) and x[n] are not one to one, there can be aliasing occuring also.

[@sindhuchinniah4363]

Thank you sir

[@sathya1657]

Can anyone tell how he directly put N at 33.38

[@ashishduhan5870]

Will this video help in ipu exams

[@jiwann4213]

Digital signal processing

[@shivanisharma-kz9pm]

@38:51 how 4..?? Pls comment if u understood..!!!

[@bellaring5211]

(a+jb)(c+jd) will take 4 multiplications

[@laijumbaby]

electronics and communication, Applied electronics and instrumentation courses

[@عيسىدرمان-ش6ذ]

thanks a lot, that's so useful. I'm asked to write a gesture to give what I've learned in digital signal processing, but I don't know wht to write about, can any one help me.... thanx.

[@mocalick]

capital ex of e to gee omega kay #mathrap

[@jitdas99]

🙏

[@henningschaferhoff1533]

The high pitching tone makes it very hard for me to follow the prof!

[@Raj-gc2rc]

Is it true that X*(exp(j-w)=X(expjw) if and ony if the sequence x(n) is real not for complex sequence.

[@Saur7abh]

Like like like

[@electricarmys248]

Any AIT college (Chikmagalur) students here

[@christiaanmoikahk9646]

even the lecturers are kuli now

[@nixow5041]

J'aime pas cette Vidéo elle et nul et elle dur 1Heure!💜

[@KnowledgeAmplifier1]

J'aime=I love Cette video= this video.....Francais :-) I learnt french in this sem...Je parle francais

[@mr.rachetphilanthrophist601]

Then you should watch your mom bathing. That would be treat to your eyes.

[@robertbristow-johnson6362]

At time index 21:50, this presenter is COMPLETELY WRONG.

[@studology67]

whats wrong?

[@studology67]

are you referin to aliasing ??

[@Pradeep1989]

@lifeboy6969 Thanks. LOL.

[@StealthNinjaX2]

this stuff is too difficult, i quit....

[@KnowledgeAmplifier1]

If something goes very difficult , then check in MATLAB , there you can visualize what is happening, and if you want check this playlist--> kzbin.info/aero/PLjfRmoYoxpNr3w6baU91ZM6QL0obULPig

[@banduke]

confused me even more. Time for a stiff drink I think.

[@DavidBcc]

LOLPAKI

[@V101135]

bore kiya ..poora 1 ghantaaa

[@bhaswatmandal8751]

Tera dimag nahi hai wo bol

[@robertbristow-johnson6362]

At time index 21:50, this presenter is COMPLETELY WRONG.

[@robertbristow-johnson6362]

At time index 21:50, this presenter is COMPLETELY WRONG.