Frequency domain - tutorial 2: Fourier series

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  • เผยแพร่เมื่อ 26 ธ.ค. 2024

ความคิดเห็น • 106

  • @davidsharma8277
    @davidsharma8277 7 ปีที่แล้ว +34

    This world needs more teachers like you!

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว +1

      Thanks a lot, David.

  • @muhammedakram4661
    @muhammedakram4661 5 ปีที่แล้ว +9

    I cant explain how amazing you explain
    Not boring
    Not so fast
    Not So slow
    you speak with the language which student can understand in one word you are amazing bro
    Greetings From Iraq

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว +3

      Hey my friend. I can't explain how amazing you are :) Thank you for the kind words!

    • @kanjunior1019
      @kanjunior1019 2 ปีที่แล้ว

      @@Kuchdelan What software are you using! Your tone is just perfect and easier to understand! Thanks a lot!

  • @hagopminassian1778
    @hagopminassian1778 6 หลายเดือนก่อน

    You are a living legend sir! Thank you for explaining the topic.

    • @Kuchdelan
      @Kuchdelan  5 หลายเดือนก่อน

      You are most welcome

  • @majetikoushik8907
    @majetikoushik8907 7 ปีที่แล้ว +11

    I'm sure that this channel becomes one of the best channel for electronic students in youtube .Superb is just a word for your explanation. Thanks a lot for your help.

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      Thanks a lot for your amazing feedback! I'm sure you are one the best students out there ;) cheers!

  • @muhammadshayan8794
    @muhammadshayan8794 3 ปีที่แล้ว +3

    someone call FBI this guy teaches better than my whole university

    • @Kuchdelan
      @Kuchdelan  2 ปีที่แล้ว

      Lol! Thank you!

  • @Dina-he1uc
    @Dina-he1uc ปีที่แล้ว

    I came across this video to learn a different topic but I stayed and watched because for once I think i finally understand what the heck a Fourier series is and all the concepts around it.. thank you so much !!!

    • @Kuchdelan
      @Kuchdelan  5 หลายเดือนก่อน

      Thanks for your kind words and pleasure to help!

  • @pranavsoni3341
    @pranavsoni3341 4 ปีที่แล้ว +2

    Thanks a lot. You just saved my Mid-Sems.

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว

      Glad I could help!

  • @abdulmuminredhowan5874
    @abdulmuminredhowan5874 3 ปีที่แล้ว +1

    You are the best teacher ever.... I was struggling to learn the signal course and I have watched, neso academy, Gate plus, and many more but I could understand why I am studying this!. what is this thing. Watching your video, my all confusion is gone now.
    thank you for your help.
    Now you are one of the best teachers in my life.

    • @Kuchdelan
      @Kuchdelan  3 ปีที่แล้ว

      You are very kind Abdul. Thank you for your feedback and it was a pleasure to help you understand the topic.

    • @abdulmuminredhowan5874
      @abdulmuminredhowan5874 3 ปีที่แล้ว

      @@Kuchdelan Please make new videos. I am waiting for your videos.

  • @ZW3L_
    @ZW3L_ 10 หลายเดือนก่อน +2

    Hello Iman! i'm learning DSP from your course. firstly i'm alot of thanks to you for your great course.
    please can you explain in 19:56 , why you replace K by P for what purpose? i hope you reply for me

  • @JeremyChung
    @JeremyChung ปีที่แล้ว

    These videos are straight value. Short and really helpful. You're training the next gen of engineers sir

    • @Kuchdelan
      @Kuchdelan  5 หลายเดือนก่อน

      Thank you! You are very kind 🤗

  • @bell8837
    @bell8837 6 ปีที่แล้ว +1

    I did not get the idea when I was studying EE long time back in college, through your video, I finally get it. Thank you very much.

    • @Kuchdelan
      @Kuchdelan  6 ปีที่แล้ว

      Thank your very much for your feedback. It is a great pleasure to help you understand the concept.

  • @anjalililhare7128
    @anjalililhare7128 5 ปีที่แล้ว +2

    Thanks a ton for making my day !! I have learnt more than my college teacher who never explained in subtle way

    • @Kuchdelan
      @Kuchdelan  5 ปีที่แล้ว

      Thank you for your kind words and support. It is such a great pleasure to help!

  • @southpelioner5078
    @southpelioner5078 2 ปีที่แล้ว +1

    you are the best teacher!

    • @Kuchdelan
      @Kuchdelan  2 ปีที่แล้ว

      Glad you think so!

  • @sirazulislam2957
    @sirazulislam2957 3 ปีที่แล้ว +1

    You are a great teacher, thanks a lot

    • @Kuchdelan
      @Kuchdelan  2 ปีที่แล้ว

      You are welcome!

  • @lynabouikni3519
    @lynabouikni3519 4 ปีที่แล้ว +1

    You are an amazing teacher, Thank you so much for all the effort you put in creating this great content!

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว

      You are an amazing student :) Thanks Lyna!

  • @ozzyfromspace
    @ozzyfromspace 4 ปีที่แล้ว +3

    Somethings not clear: how are you so good at this?! Well done bro!

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว

      Lollll. I am not sure what's wrong with me ;)

  • @mohamadhafizulazwanmohamad3333
    @mohamadhafizulazwanmohamad3333 7 ปีที่แล้ว +2

    Thanks Iman!! I have learnt a lot from your signal processing tutorials. Now, I can relate this to control system with deep understanding.

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      Thank you very much my friend.

  • @mahsatahmouresi8839
    @mahsatahmouresi8839 7 ปีที่แล้ว +2

    best video , great teacher, God bless you and your family

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      Thanks a bunch! You are the best ;)

  • @ahmadjavid4068
    @ahmadjavid4068 5 ปีที่แล้ว +1

    You teach mesmerizing well, Iman! Good job!

    • @Kuchdelan
      @Kuchdelan  5 ปีที่แล้ว

      Thank a lot, Ahmad!

  • @bekalugebremariam7621
    @bekalugebremariam7621 5 ปีที่แล้ว +2

    what an amazing man woooooow iman I just loved being an electrical engineer because of you man thanks a lot it is beyond science it is real pleasure!!!!!!!!!! thanks man!

    • @Kuchdelan
      @Kuchdelan  5 ปีที่แล้ว

      Thanks a lot for your kindness and amazing feedback. It made me really happy. Cheers!

  • @manrajmeena7658
    @manrajmeena7658 3 ปีที่แล้ว +1

    you are excellent teacher !

  • @zyadalharbi180
    @zyadalharbi180 7 ปีที่แล้ว +3

    thank you so much for the amazing tutorial. one thing to mention is that at 12:00 c_k = 1 ,you forgot to apply the integral boundary.

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว +1

      Thanks a lot for your positive feedback. I didn't forget to apply the boundary. Please note that the integral is just non-zero at t=0. So, you just need to replace t by zero in the integral. Hope this helps.

    • @IsZhouyiran
      @IsZhouyiran 7 หลายเดือนก่อน

      Omg i thought the same😂

  • @anindya448
    @anindya448 4 ปีที่แล้ว +1

    So far the best demonstration of Signals and Systems in You Tube. Excellent presentation of concepts that make learning fun. The pictures in between also add to the videos in setting a bright mood in the course of the videos.
    Thanks for such a great work!
    Will there be DSP lectures too sometimes in future?

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว +1

      Hi Anindya! Thanks for your amazing feedback and support. DSP is my next course for sure. The creation process is currently very time-consuming and I am working on a platform to speed it up (Castofly). I will create a lot of tutorials on DSP in the future!

    • @anindya448
      @anindya448 4 ปีที่แล้ว

      @@Kuchdelan Done! :-D

  • @suhanurrahman4602
    @suhanurrahman4602 7 ปีที่แล้ว +4

    very very good lecture

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      thank you ;)

  • @wasamba1
    @wasamba1 2 ปีที่แล้ว +1

    Iman thank you very much!

    • @Kuchdelan
      @Kuchdelan  2 ปีที่แล้ว

      You are welcome

  • @YoDontBeThatGuy
    @YoDontBeThatGuy 7 ปีที่แล้ว +1

    It was very useful. thanks for your lecture.

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      you are very welcome! thanks for watching ;)

  • @omridrori3286
    @omridrori3286 2 ปีที่แล้ว +1

    I dont understand something in 9:26 you use formula with the sine and in 13:46 you use the formula with the cosine but if i use the same formula with the sine there i get another answer not the same so how can i know where to use each of them?
    and why do i get there another answer?

  • @larsbreumhansen7516
    @larsbreumhansen7516 3 ปีที่แล้ว +2

    I think I missed it. What was the meaning of ck? Around the 10 minute mark.
    Thanks a ton for the videos and greetings from Sweden

    • @Kuchdelan
      @Kuchdelan  3 ปีที่แล้ว

      Hey Lars. Thank you for your feedback. CKs are the weights for different frequencies. Hope this helps.

  • @alkingshefo
    @alkingshefo 7 ปีที่แล้ว +1

    not what i was looking for maybe after the exam will check it ^_^

  • @ozzyfromspace
    @ozzyfromspace 4 ปีที่แล้ว +1

    At 10:00 When k=0, c_k is indeterminate, and L’Hopital gives 1/2

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว +1

      That's correct.

  • @ms24769
    @ms24769 5 ปีที่แล้ว +1

    damet garm mashti ;)

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว

      mamnon Sherwin jan :)

  • @zeeshan123633
    @zeeshan123633 3 ปีที่แล้ว +1

    Can you please make video on Convolution

    • @Kuchdelan
      @Kuchdelan  3 ปีที่แล้ว +1

      I do have a video on convolution:
      th-cam.com/video/Y-h7qoTVQtw/w-d-xo.html

    • @Kuchdelan
      @Kuchdelan  3 ปีที่แล้ว

      th-cam.com/video/LIs0h34iFN8/w-d-xo.html

    • @zeeshan123633
      @zeeshan123633 3 ปีที่แล้ว

      Are there any
      lectures on IIR and FIR filters

  • @dorcasawak2119
    @dorcasawak2119 4 ปีที่แล้ว

    How r u getting the period in the frequency domain

  • @mahsatahmouresi8839
    @mahsatahmouresi8839 7 ปีที่แล้ว +1

    do you also have videos on electromagnetic course ?

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      Sorry Mahsa, I don't :/ best of luck with the electromagnetic course!

  • @aravindpolepeddi4139
    @aravindpolepeddi4139 5 ปีที่แล้ว +1

    At 15:07..the area is negative..how is an area -ve in physical world?

    • @Kuchdelan
      @Kuchdelan  5 ปีที่แล้ว +2

      Please read this post:
      math.stackexchange.com/questions/2360208/can-an-area-have-negative-portions

    • @univuniveral9713
      @univuniveral9713 5 ปีที่แล้ว

      This is not the physical world. However, an analogy in the physical world can be made

  • @damianosharolatridis8497
    @damianosharolatridis8497 3 ปีที่แล้ว +1

    quick question.. why so awesome?

    • @Kuchdelan
      @Kuchdelan  3 ปีที่แล้ว

      Loll! Not sure what's wrong with me ;)

  • @dibakarroy4133
    @dibakarroy4133 7 ปีที่แล้ว +1

    Thank you so much! Helped me a lot! ^_^

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      pleasure to help. cheers!

  • @duongng8069
    @duongng8069 4 ปีที่แล้ว

    24:42 c(-k)* = c(k), and c(k)= - c(-k) at right above. So c(-k)* = - c(-k). Then I think c(-k) is j or -j something cuz j* = -j. The signal is imagine, isn't it ?

  • @anandbingi6310
    @anandbingi6310 ปีที่แล้ว

    Your explanation is good, but can you explain how sir Fourier has arrived at the Fourier synthesis and Fourier analysis equations

    • @Kuchdelan
      @Kuchdelan  5 หลายเดือนก่อน

      Lol! I guess he was just a genius ;)

  • @ASEMSKY
    @ASEMSKY 8 ปีที่แล้ว

    @12:00 isnt that the integral of e^0 is one and replacing with the period ull get 1/6*(3+3) so the answer is one ?

    • @Kuchdelan
      @Kuchdelan  8 ปีที่แล้ว +1

      Please note that delta(t) is not one across the whole integral. The only non-zero location for delta(t) is at the origin. Hope this helps.

    • @ASEMSKY
      @ASEMSKY 8 ปีที่แล้ว +1

      crystal clear
      so its 1+ punch of zeros
      and man thanks alot for your tutorial im learning alot (this is my second time playing this list ) hope ill do will in my exam

    • @Kuchdelan
      @Kuchdelan  8 ปีที่แล้ว +1

      Thank you very much & good luck.

  • @elec8734
    @elec8734 6 ปีที่แล้ว

    At 14:48, should W0 be pi/3?

    • @Kuchdelan
      @Kuchdelan  6 ปีที่แล้ว

      T is 2, so w0 is 2*pi/T = 2*pi/2 = pi

  • @boshboshish
    @boshboshish 6 ปีที่แล้ว +1

    thank you very much Iman for your great explanation , but I was wandering about : should Ck = C*k and not C*-k for it to be real ,,why are we putting conjugate for - k

    • @Kuchdelan
      @Kuchdelan  6 ปีที่แล้ว

      Hey Boshbosh, thank you very much for your comment. I proved the property at the end. Please let me know if it is not clear.

    • @boshboshish
      @boshboshish 6 ปีที่แล้ว +1

      @@Kuchdelan my apology ,,I got it ,,you right,,,تشكر اخي

    • @Kuchdelan
      @Kuchdelan  6 ปีที่แล้ว

      @@boshboshish no worries at all ;)

  • @Lestibournes
    @Lestibournes 5 ปีที่แล้ว +1

    4:13 - Not definitely LTI or definitely not LTI? There is a difference in the meaning.

    • @Kuchdelan
      @Kuchdelan  5 ปีที่แล้ว +1

      The system is not LTI as the frequency has been changed.

  • @hyperion3704
    @hyperion3704 4 ปีที่แล้ว

    So? Fourier series is a time-domain to frequency domain transformation method for periodic signals? Or is it just a representation method for periodic signals?

    • @Kuchdelan
      @Kuchdelan  4 ปีที่แล้ว +1

      Yep, former is true.

  • @mohamedatef7974
    @mohamedatef7974 7 ปีที่แล้ว +1

    you are great , thank you :D

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      Mohamed Atef thanks a lot, my friend.

  • @袁-f7h
    @袁-f7h 2 ปีที่แล้ว

    It's too clear. It solved a problem that had been bothering me for a long time. I only have a question for the second example. It seems that you chose [-3, 3] to be the period and this integration only has sense at t=0 due to unit impulse, and the exponent goes to 1. However, I chose the period as [1, 7]. the sensing point are changed to t=6, and in this case the exponent cannot be 1. What am I thinking wrong or how do I solve this problem? Thank you very much.

  • @aydinzarifie7267
    @aydinzarifie7267 หลายเดือนก่อน

    Fanrastic
    Thank u

  • @Andrei-ds8qv
    @Andrei-ds8qv 7 ปีที่แล้ว +1

    thankx dude!

    • @Kuchdelan
      @Kuchdelan  7 ปีที่แล้ว

      For Phone thanks a lot for following my tutorials ;)

  • @hossamfadeel
    @hossamfadeel 6 ปีที่แล้ว +1

    GREAT

  • @devlyndorfer4931
    @devlyndorfer4931 8 ปีที่แล้ว +1

    TY

    • @olajoyolawuyi9635
      @olajoyolawuyi9635 7 ปีที่แล้ว

      mr iman pls how do I relate. this time domain Fourier transform stuff to medical image processing

  • @qianhaolam7056
    @qianhaolam7056 6 ปีที่แล้ว

    Isnt yellow = blue + green?

    • @Kuchdelan
      @Kuchdelan  6 ปีที่แล้ว

      No, yellow is red + green ;)

  • @badreddinegacem
    @badreddinegacem 3 ปีที่แล้ว

    .