Fourier Transform, Fourier Series, and frequency spectrum

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  • เผยแพร่เมื่อ 23 พ.ย. 2024

ความคิดเห็น • 2.8K

  • @EugeneKhutoryansky
    @EugeneKhutoryansky  5 ปีที่แล้ว +114

    To see subtitles in other languages: Click on the gear symbol under the video, then click on "subtitles." Then select the language (You may need to scroll up and down to see all the languages available).
    --To change subtitle appearance: Scroll to the top of the language selection window and click "options." In the options window you can, for example, choose a different font color and background color, and set the "background opacity" to 100% to help make the subtitles more readable.
    --To turn the subtitles "on" or "off" altogether: Click the "CC" button under the video.
    --If you believe that the translation in the subtitles can be improved, please send me an email.

    • @anonim5926
      @anonim5926 3 ปีที่แล้ว +1

      What kind of program do you use for these animations?

    • @نعلايتينعلايه-ر8ح
      @نعلايتينعلايه-ر8ح 3 ปีที่แล้ว

      What is the name of this music…?

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  3 ปีที่แล้ว +5

      The music in this video is from the free TH-cam audio library, and the names of the songs are the following.
      Hungarian_Rhapsody_No_2_by_Liszt
      Stale Mate

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  3 ปีที่แล้ว +6

      Büşra Akyüz, I make all my 3D animations with the program "Poser." Thanks.

    • @ishworshrestha3559
      @ishworshrestha3559 3 ปีที่แล้ว

      Ok

  • @exxodas
    @exxodas 4 ปีที่แล้ว +912

    When they showed Sine waves in 3D, that was one of the biggest aha moments I’ve ever had. These guys are amazing .

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  4 ปีที่แล้ว +66

      Thanks.

    • @Saleh19999
      @Saleh19999 4 ปีที่แล้ว +8

      i can relate to this

    • @leondaz
      @leondaz 3 ปีที่แล้ว +5

      same

    • @spectacularserenitytunes1533
      @spectacularserenitytunes1533 3 ปีที่แล้ว

      th-cam.com/video/sZwkNmfPom8/w-d-xo.html

    • @ydl6832
      @ydl6832 3 ปีที่แล้ว +6

      This phaser diagram way of representing an sinusoidal oscillation is commonly used in physics.

  • @theoferreiramennabarreto1698
    @theoferreiramennabarreto1698 3 ปีที่แล้ว +93

    I'm on my fourth year of Electrical Engineering, and the frequency spectrum has always been an abstract concept that I could never truly wrap my head around. Explaining it as a density of frequencies that, when inputed to sine functions, form a given function was a huge a-ha moment for me, thank you so much!

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  3 ปีที่แล้ว +9

      I am glad my video was helpful. Thanks.

    • @chriswalsh5925
      @chriswalsh5925 2 ปีที่แล้ว +3

      @@EugeneKhutoryansky Yes, he was freqing out there for a bit

    • @X19-x5f
      @X19-x5f 2 ปีที่แล้ว

      @@chriswalsh5925 lol, awesome!

    • @flamurbedrolli802
      @flamurbedrolli802 3 หลายเดือนก่อน

      @@EugeneKhutoryansky and it is . I have seen many many other videos , but to be honest , today i saw this and i can tell this is the fundamental video , Period

  • @ThePenguinTutorials
    @ThePenguinTutorials 6 ปีที่แล้ว +212

    This video literally made me cry. I wish our current educational institutions taught math with the same beauty that you, Euclid, and other great thinkers were able to pull out of the logic of the numbers. Seriously great job!

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  6 ปีที่แล้ว +14

      Thanks for the compliment.

    • @Thebossatmserfgsd
      @Thebossatmserfgsd 2 ปีที่แล้ว +3

      🥺

    • @nachtundnebel-up3nk
      @nachtundnebel-up3nk ปีที่แล้ว

      in this country you must be stupid for democrats 2+2 = 5

    • @emptykid
      @emptykid ปีที่แล้ว +1

      🥺 🥺

    • @Wallyisking
      @Wallyisking ปีที่แล้ว +2

      I think this comment sums up why in 5, 10, 20 years, as the quality of free and inexpensive online education continues to improve, traditional brick-and-mortar education will lose its value significantly. If you can learn everything you would from obtaining a degree online at a fraction of the cost of attending a university, and more importantly can prove to employers that you know your stuff, how much will that degree be worth? From the employer's perspective it shouldn't matter as long as you can demonstrate your ability. Obviously there are exceptions (Doctors, for example), but AI, robotics and 3D printing could make short work of human doctors in our lifetimes - maybe we'll just train people with great bedside manners to supervise.

  • @randyzeitman1354
    @randyzeitman1354 4 ปีที่แล้ว +127

    If I had that animation in college it would’ve changed my career path.

    • @AA-gl1dr
      @AA-gl1dr 3 ปีที่แล้ว +3

      Never too late to try something new!

  • @jamesday1295
    @jamesday1295 4 ปีที่แล้ว +34

    I've watched a few of these vids back to back now. I did my engineering apprenticeship back in '97 - '01. I could perform the math, answer the questions, but never really visualized what was occurring until now. A set of really great resources, showing what are beautifully simple ideas to grasp when taught in the right way.

  • @SkaldRPG
    @SkaldRPG 7 ปีที่แล้ว +21

    This blew my mind! What an amazing example of how much more accessible even complex math becomes when visualized like this! Hats of my good sir!

  • @MistressGlowWorm
    @MistressGlowWorm 7 ปีที่แล้ว +42

    My God, the Fourier Series is one of the most beautiful and poetic equations ever created.

  • @nrazz9985
    @nrazz9985 7 ปีที่แล้ว +318

    Hungarian Rhapsody in the background is distractingly beautiful

    • @jankiel3284
      @jankiel3284 4 ปีที่แล้ว +11

      I also was impressed by beauty of the music in background, and I wanted to ask what score it is. Thank you mister N Razz

    • @DerpMuse
      @DerpMuse 4 ปีที่แล้ว +4

      Whenever I hear the Rhapsody move into the loud main variation of the song, it always reminds me of Looney Tunes! Good memories, great music.

    • @RedAllStars2010
      @RedAllStars2010 4 ปีที่แล้ว +3

      I was just looking through the comments to see if the name of the music was mentioned. It is very good.

    • @lucaferlisi2486
      @lucaferlisi2486 4 ปีที่แล้ว

      Agree

    • @Ozzz77118
      @Ozzz77118 3 ปีที่แล้ว

      ahahah you are right. I felt same way

  • @Vexxter09
    @Vexxter09 ปีที่แล้ว +19

    The moment I saw the sine wave in 3D my mind was blown it was like my brain had unlocked a level it didn't know existed, seriously huge props to yiu my dude you're genuinely making people passionate about math

  • @utkarsh-wl8sg
    @utkarsh-wl8sg ปีที่แล้ว +32

    I cried watching this. Lots of thanks to you from India.

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  ปีที่แล้ว +8

      I am glad you liked my video that much. Thanks.

    • @DaveWasThereMan
      @DaveWasThereMan 4 หลายเดือนก่อน

      th-cam.com/video/pwaTzpNo4BA/w-d-xo.htmlsi=gLyR-K53BdwAppJA

    • @chanfarishafi6467
      @chanfarishafi6467 3 หลายเดือนก่อน +1

      Bro ! I can feel ur emotion
      !! From india 😂🫡🤝

    • @Ste-q9n
      @Ste-q9n 2 หลายเดือนก่อน

      It is the best lesson on the topic, cheers a million ​@@EugeneKhutoryansky

  • @esmashahin2167
    @esmashahin2167 7 ปีที่แล้ว +471

    This is the most beautiful thing I've ever seen on TH-cam, the only visual I've found thus far that truly captures the magic of sine functions. Thank you

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  7 ปีที่แล้ว +35

      Thanks for that really great compliment about my video. If you have not already done so, you may want to also check out some of my other videos too.

    • @tommushrom5929
      @tommushrom5929 6 ปีที่แล้ว

      No. They should introduce triangles. Then it would be considered beautiful and comprehend to me.

    • @ogunsadebenjaminadeiyin2729
      @ogunsadebenjaminadeiyin2729 5 ปีที่แล้ว +4

      Beautiful comment. Thumbs up to Eugene for the awesome animation.

    • @ruprectmonkeyboy1856
      @ruprectmonkeyboy1856 4 ปีที่แล้ว +1

      @@tommushrom5929 different application.

    • @vector8310
      @vector8310 4 ปีที่แล้ว +1

      @@tommushrom5929 are you a competitor? Or just envious by nature?

  • @mfaraday4044
    @mfaraday4044 4 ปีที่แล้ว +17

    When ever I came to this channel I feel two things
    either I am in future or I am in 19-20 century .
    The power of physics

  • @Christina.N.
    @Christina.N. 4 ปีที่แล้ว +9

    I have been taught this in lectures and I just did not "get it" . Until now. I cannot thank you enough for your hard labour. You are truly a pioneer.

  • @robrobinette
    @robrobinette 6 ปีที่แล้ว +7

    A truly eye opening visualization of a complex subject. Thank you Dr.Khutoryansky for creating and sharing it with us.

  • @bobbyrp9881
    @bobbyrp9881 4 ปีที่แล้ว +19

    I never expected this to be this deep and simple at the same time.

  • @naimulhaq9626
    @naimulhaq9626 8 ปีที่แล้ว +6

    As a student of electrical engineering I had to struggle visualizing Fourier series, but to visualize your beautiful representation was refreshing and spellbinding. Thank you.
    How easily all shapes of wave forms can be constructed from sine waves.

  • @devbanthia6154
    @devbanthia6154 2 ปีที่แล้ว +14

    the animation that you've used in this video is truly mind boggling. I wish my college professor taught stuff in the same
    intuitive way that you do

  • @pc300000
    @pc300000 8 ปีที่แล้ว +150

    This is a work of art !
    I am a big fan of simplicity and visualization. I think the biggest service to humanity is when you open someone's eyes in awe by simple explanation of a complex subject with brilliant visuals. You have done exactly that Dr.Khutoryansky. Please keep up the good work.
    May I ask which software did you use to produce these amazing 3D animations?:

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  8 ปีที่แล้ว +37

      Thanks for the compliment. I make all my 3D animations with the software "Poser."

    • @scottliu9555
      @scottliu9555 6 ปีที่แล้ว

      r

    • @ankitaaarya
      @ankitaaarya 5 ปีที่แล้ว

      Truee agreed

    • @someonlinevideos
      @someonlinevideos 5 ปีที่แล้ว +2

      Chandran Palanisamy the true sign of genius is I. The simplicity with which one can explain complex important ideas 💡

    • @Zooofa0610
      @Zooofa0610 3 ปีที่แล้ว

      @@EugeneKhutoryansky 😍

  • @davydlima5539
    @davydlima5539 2 ปีที่แล้ว +2

    I'm speechless with the level of didactics in this video. Congratulations

  • @KcKc-bh6lu
    @KcKc-bh6lu 5 ปีที่แล้ว +3

    It's so beautiful explaination. Many of my coworkers were some of the best engieers and scientists. But none of them could explain the Fourier Transformer in such simple and clarity manner of yours. Thank you. Most engineers know that complex wave forms were the sum of sine waves. But it's visually difficult for me to grasp the concept.

  • @divyakhandelwal2400
    @divyakhandelwal2400 7 ปีที่แล้ว +122

    Before this, I never knew that what I was studying had any meaning.... thanks a lot!

    • @marzipug5439
      @marzipug5439 3 ปีที่แล้ว +3

      You think people just make this stuff up? lol

    • @vijaysingh4080
      @vijaysingh4080 3 ปีที่แล้ว

      i can feel it....but am little late.

    • @scp-yearsago
      @scp-yearsago 3 ปีที่แล้ว +1

      I am about to fail this semester in college and now I am realising Math can be this beautiful.

  • @chillingmeko
    @chillingmeko 8 ปีที่แล้ว +1338

    That moment you have an ahh moment as an Electrical Engineering student. XD feels good bro.

    • @Star3
      @Star3 8 ปีที่แล้ว +18

      +Ohmeko Ocampo i just had the same thing happen, Finals for Discrete has me searching, lol

    • @Annihilator49
      @Annihilator49 8 ปีที่แล้ว +19

      +Murdered Ink I had a teacher who explained Discrete math topics the same way as Eugene explains these topics.

    • @ahmedmborik
      @ahmedmborik 8 ปีที่แล้ว +9

      +Ohmeko Ocampo Indeed! I was just screaming ahhh like an idiot now

    • @chillingmeko
      @chillingmeko 8 ปีที่แล้ว +23

      Peter Bayley I wasn't so fortunate, but thank goodness for the internet that there are other out there who can explain these topics well. :)

    • @YamilSG
      @YamilSG 7 ปีที่แล้ว +9

      HAHAHHAHA Aeronautical engineer here. Same for me. In my case i wasnt that fortunate, but its amazing to know were things come from. Gives you a whole nother level of understanding

  • @davidwright8432
    @davidwright8432 6 ปีที่แล้ว +16

    Seeing what's going on in equations (such as sums of sine waves) is the same as the difference between looking at a musical score, and hearing the music. The music is the point - the score, just a way of capturing change in a static form (as equations are, to what you show here). Thanks! You're a fantastic resource for anyone wanting to learn this stuff. Me, for instance!

    • @chriswalsh5925
      @chriswalsh5925 2 ปีที่แล้ว

      Great analogy...yes, it's the difference between understanding the notation of something and understanding the thing itself at a deep level... I sometimes think the language of mathSSS obscures more than it reveals :D eg imagine trying to describe the colour red to a blind person. You can use the most complex language in the world but it wouldn't work. I think there needs to be some way of describing motion of things separate from language and maths, maybe. What that is I don't know, but it would be pretty handy!

  • @THE_ONLY_GOD
    @THE_ONLY_GOD 2 ปีที่แล้ว +5

    That sinusoid as an upward spiral moment was really wonderful. Thanks!

  • @gisforgirard
    @gisforgirard 5 ปีที่แล้ว +4

    I feel like this video answers all of quantum mechanics and in fact all of reality to me like nothing ever has before. Fantastic.

  • @afederdk
    @afederdk 9 ปีที่แล้ว +169

    Though I was familiar with the Fourier transform, I had no idea its mathematics could be visualized in this intuitive way.

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  9 ปีที่แล้ว +51

      +Anders Feder, I am glad to hear that you found this to be an intuitive visualization. Thanks.

    • @flitzgerald7984
      @flitzgerald7984 7 ปีที่แล้ว +13

      Physics Videos by Eugene Khutoryansky You should be super proud of yourself for imparting knowledge in such a lucid way, that too as non profit service.

    • @defenestrator9119
      @defenestrator9119 6 ปีที่แล้ว +6

      I just found your videos, and they are amazing. You take the most advanced concepts and visualize them in such understandable and intuitive ways... well, as intuitive as you can make these concepts to us humans. Every one of your videos I've watched so far has helped me connect things in a way I had not before.

  • @musicaddikt7444
    @musicaddikt7444 6 ปีที่แล้ว +101

    This is genius....plus you managed to overlay the right kind of music that constructively interferes with learning. Good work, I love your videos, being a highly audio-visual learner.

    • @MonkOrMan
      @MonkOrMan 3 ปีที่แล้ว +1

      Learning styles are a myth

    • @junogoose
      @junogoose 3 ปีที่แล้ว +1

      @@MonkOrMan So, teaching modalities are also a myth? Good to know.

    • @MonkOrMan
      @MonkOrMan 3 ปีที่แล้ว

      @@junogoose Yes

    • @CommunityGuidelinez
      @CommunityGuidelinez 2 ปีที่แล้ว +2

      @@junogoose Where are they a myth? The dishwasher station at Dairy Queen?

    • @junogoose
      @junogoose 2 ปีที่แล้ว +1

      @@CommunityGuidelinez I was being facetious.

  • @wolfgangbenfattoum8137
    @wolfgangbenfattoum8137 8 ปีที่แล้ว +141

    aahhhhh....it makes so much sense when in 3D. Wonderful job.

    • @YamilSG
      @YamilSG 7 ปีที่แล้ว +7

      hahaha I love how most of the engineers and people that use this kind of things are like "Damn. I thought i knew what i was doing but i actually had no idea."

  • @SonnyIC
    @SonnyIC 6 ปีที่แล้ว +329

    'We can add together FIVE sine waves'
    Me: Goddammit you gotta stop

    • @igorjosue8957
      @igorjosue8957 3 ปีที่แล้ว

      We can add together INFINITE ^ 10 sine waves

    • @Operational117
      @Operational117 3 ปีที่แล้ว +9

      @@igorjosue8957
      Limits? Broken!
      Reality? Rejected!
      Hotel? Trivago!

    • @__8120
      @__8120 3 ปีที่แล้ว +3

      "there's more"
      "No"

    • @gustavocortico1681
      @gustavocortico1681 3 ปีที่แล้ว +6

      "add more waves"
      "but sir we are close to critical-"
      "ADD MORE WAVES!"

    • @rhonaldcastiglionemcbriard2023
      @rhonaldcastiglionemcbriard2023 3 ปีที่แล้ว +3

      For a sec I was fully expecting that the rest of the video from that point would be a count upwards to the end, with 0 discussion of the fourier transform lol

  • @nicos1097
    @nicos1097 ปีที่แล้ว

    I am very fortunate to have these videos as I begin my engineering degree. I will always refer classmates who are struggling to understand concepts like the Fourier transform to this channel!

  • @jayakrishna2154
    @jayakrishna2154 7 ปีที่แล้ว +5

    After watching this video I learned a ton. Even though I studied this in my four years of engineering I didn't realized this is what happening.
    THANKS a ton

  • @aarevalo49
    @aarevalo49 8 ปีที่แล้ว +8

    Beautiful. Really enjoyed it. I hope this will help young students want to pursue a deeper understanding of signal processing. The more general form of this idea introduces imaginary numbers (i.e., complex math) creating a very powerful tool.
    The Fourier transform is just one, among other types of transform, that allow us to manipulate the way we see mathematical functions. Just like logarithms allows us to do multiplication by adding and then transforming back to get the desired product, Fourier transforms allow us to study the characteristics of signals in time by looking at the signal in the frequency domain.

    • @1st_ProCactus
      @1st_ProCactus 8 ปีที่แล้ว

      No such this as an imaginary number. Its not imaginary if it means something.

    • @nunyabisnass1141
      @nunyabisnass1141 7 ปีที่แล้ว

      ProCactus imaginary numbers are numbers that not represent real things. You play with them all of the time in basic algebra, where the number doesn't correspond to any real thing.
      In the classical equasion y=mx^2+b. You only input numbers as you need to solve for various values of one type or another, but these numbers do not represent a real thing.

  • @germancampos1498
    @germancampos1498 4 ปีที่แล้ว +4

    What else can we say?... this is such a piece of art, taking into account the effort we had to have to abstract such math back in engineering college... great job!

  • @franciscojavierizkierdoitu5966
    @franciscojavierizkierdoitu5966 หลายเดือนก่อน +1

    I never would have believed that the Fourier representation could look even better. Congratulations, Eugene!!

  • @maciodb
    @maciodb 5 ปีที่แล้ว

    I'm impressed with how good this video is. This is how every tutorial and teaching video should look like.

  • @TheSacknasty
    @TheSacknasty 8 ปีที่แล้ว +781

    they don't mention the word fourier transform even one time?!?!

    • @maxzhao
      @maxzhao 7 ปีที่แล้ว +19

      Haha I thought the same :D

    • @martinzitter4551
      @martinzitter4551 7 ปีที่แล้ว +41

      Does he serve Supper with the video?

    • @DavidSaintloth
      @DavidSaintloth 7 ปีที่แล้ว +149

      That's the beauty of the visual approach .... you SEE the transform emerge by the simple shifts of perspective.
      The transform emerges from recognizing that a combination of sin waves of various frequency , amplitude and phase can be summed to emerge over sample time a particular output wave form ...this is exactly what the transform does...the video doesn't actually provide the equation but one should be able to see how the terms of it emerge from simple visual examination of this video...which is what makes it so awesome.
      If I'd had this video as a guide when I was learning the FT back in the mid 90's as an undergrad it would have cemented the mental imagery I was creating to try and understand it myself.

    • @BehzadVaziri
      @BehzadVaziri 7 ปีที่แล้ว +136

      it is like "your are in the jungle and complain about trees which dont let you see the jungle!!!". This whole thing is fourier transform! You better have an idea about that then watch this wonderful video.

    • @ravitiwari4707
      @ravitiwari4707 7 ปีที่แล้ว +7

      FYI,, fourier representation of any signal is a way in which signal can be represented as sum of orthogonal signals(complex exponential signals which is a sine wave by a simple formula) ....

  • @eslamsaeed622
    @eslamsaeed622 6 ปีที่แล้ว +43

    I would like to thank you so much for all these beautiful videos in your channel. Actually, these videos show how physics and science are beautiful and enjoyable not complicated and boring like what exists in books and theoretical resources.

  • @MrPabloguida
    @MrPabloguida 3 ปีที่แล้ว +4

    The future of leaning will depend on our abilities to create video/animation/graphs aiding materials like this. Well done, guys!

  • @deadpool1729
    @deadpool1729 2 ปีที่แล้ว +2

    Mr. Eugene, your videos are extremely good. You have incorporated visual presentations using technology at a terrific degree. I entered college and studied electronics engineering on my 1st year. Now that I'm at 4th year, I seriously recommend your channel to the freshmen and future engineers.

  • @miltonderezende7906
    @miltonderezende7906 4 ปีที่แล้ว

    I am an electrical engineer here in Brazil. Congratulations on this graphic animation where we can clearly see the result of the sum of the different harmonics of the Fourier series

  • @D3tyHuff
    @D3tyHuff 6 ปีที่แล้ว +38

    You forgot to mention that we can add together 6 sine waves!

  • @rikushimo8413
    @rikushimo8413 6 ปีที่แล้ว +3

    Thank you for helping me visualise mathematics..
    I was searching for something like this since my childhood.. I knew maths is beautiful but was not able to visualise it..
    This video made my day..
    Heartfelt thanks to the creator of these videos.

  • @kentvandervelden
    @kentvandervelden 9 ปีที่แล้ว +36

    I always enjoy the clever ways you explain concepts. In this one, I was expecting an explanation of how to perform Fourier decomposition and the FFT. I hope you'll consider that topic for a future video.

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  9 ปีที่แล้ว +20

      +Kent A. Vander Velden, yes that is a topic for a future video. Thanks.

  • @Lily-tr9pn
    @Lily-tr9pn 4 ปีที่แล้ว +1

    Read about sin, cos,tan theta in high school and wondered what was it all about...then said goodbye to mathematics forever...wish someone had taught us these concepts like this...hats off to your beautiful video👍👍👍

  • @FireFox2382
    @FireFox2382 2 ปีที่แล้ว +1

    This is one of the most beautiful videos I have seen! I cannot even imagine the minds of the scientists who discover these maths hundreds of years ago before modern technologies 🤯

  • @timmy3211
    @timmy3211 4 ปีที่แล้ว +36

    15:00 Hitting me with an existential crisis there. Great video as always!

  • @kamalbahadur007
    @kamalbahadur007 8 ปีที่แล้ว +10

    Mathematics + Computer Science = Best thing that can happen to you.
    After seeing this video, I couldn't resist myself from subscribing.

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  8 ปีที่แล้ว +5

      Glad to have you as a subscriber, and I am glad that you liked my video.

  • @The_Black_Vegeta
    @The_Black_Vegeta 5 ปีที่แล้ว +26

    Holy SHIT!
    It finally makes sense! It all finally makes sense! It’s beautiful! 😭

  • @nitishmishra9365
    @nitishmishra9365 6 ปีที่แล้ว +1

    A lot of gratitude to you for this video,clearing the concept in crystal clear way

  • @garymitchell4719
    @garymitchell4719 5 ปีที่แล้ว

    Staggering graphics that perfectly demonstrate what is so hard to get across verbally. Been a maths student for 50 years yet I learned something today that was staring me in the face all that time but I never spotted it before - the sine wave formation on the 'z' axis. Also a great way to demonstrate why mathematicians use radians and not degrees in complex situations. Astounding video..... many thanks.

  • @SafeAndEffectiveTheySaid
    @SafeAndEffectiveTheySaid 8 ปีที่แล้ว +29

    Amazing! You made complex math like Fourier Series simple and straighforward

  • @matteopisanello7787
    @matteopisanello7787 4 ปีที่แล้ว +32

    My eyes are seeing sine waves, my mind is seeing tom who's bashing jerry on the piano

  • @michaelzap8528
    @michaelzap8528 7 หลายเดือนก่อน

    I show my grade 7 son this video and give him a little bit explanation, he instantly know and master the Fourier things, polar system, vector concept and imagine number including Euler formula.
    This video just game changer.

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  7 หลายเดือนก่อน

      I am glad my video was helpful for your son. Thanks.

  • @oracledsp
    @oracledsp 5 ปีที่แล้ว +1

    I am just starting to learn the mathematics of audio signal processing using Max 8, and this was one of the most helpful and informative videos I have seen!

  • @RoboBoddicker
    @RoboBoddicker 8 ปีที่แล้ว +55

    Fourier transforms and Liszt. Like peanut butter and chocolate ; )

  • @airtonsen8838
    @airtonsen8838 4 ปีที่แล้ว +6

    Excelente Video, obrigado por ele, sou Estudante de Engenharia de Controle e Automação e este vídeo me ajudou bastante a entender o comportamento da frequencia no dominio do tempo.

  • @失われたフグリ
    @失われたフグリ 4 ปีที่แล้ว +3

    教育界はこういう分かりやすい説明をもっと取り入れるべき。

  • @seansong2808
    @seansong2808 2 ปีที่แล้ว +1

    Thank you sir! Your videos are way better than UC Berkeley electrical engineering classes!

  • @kipropkigz1285
    @kipropkigz1285 2 ปีที่แล้ว +1

    the last part was really deep... thank you for this amazing work

  • @ehudv9276
    @ehudv9276 7 ปีที่แล้ว +35

    Holy crap, theses videos are so good!
    that "ahh" moment mentioned below, I had the same thing, seeing the video from 00:00 to 00:40
    Now I understand how cosin/sin wave functions relate to circular motion.
    simply amazing
    thank you

  • @xBoomshock
    @xBoomshock 4 ปีที่แล้ว +33

    “can you feel it?...the force...its always been there...”

  • @geetmalhotra6460
    @geetmalhotra6460 7 ปีที่แล้ว +13

    wow this is the best explanation with animation that i've ever seen.
    "AWESOME"👌👌👌👌👍

  • @828burke
    @828burke 3 ปีที่แล้ว

    The sphere and line model REALLY makes it make more sense to me than the typical circles connected at midpoints that you see in videos. It lets me see that its essentially adding a vector instead of just being random. I could have comd to thst intuition eventually but this helped a lot.

  • @northantsgarage2444
    @northantsgarage2444 6 ปีที่แล้ว

    Complex topic made incredibly simple and clear. 10/10. Absolutely brilliant.

  • @MrZzfitzz
    @MrZzfitzz 6 ปีที่แล้ว +8

    Came here because I was instructed by my college professor, will return again when on psychedelics

  • @fortoday04
    @fortoday04 8 ปีที่แล้ว +38

    That was absolutely brilliant. I think I also watched one of your video about entropy. You're doing amazing work. Keep it up!

  • @fahmylina123
    @fahmylina123 8 ปีที่แล้ว +73

    Much more than excellent video

  • @Daniel-lc6ol
    @Daniel-lc6ol ปีที่แล้ว +1

    probably the most outstanding explanation of FFT i've ever seen so far. This is brilliant. Thank you so much.

  • @clovemao329
    @clovemao329 3 ปีที่แล้ว

    who would have thought bringing another dimension can enlighten so many difficulties. I think this is the best format for learning stuff, comprehensive animation + 3D. This method delivers knowledges way beyond text books does.

  • @krakenmetzger
    @krakenmetzger 5 ปีที่แล้ว +66

    I feel like I'm doing math on the moon

  • @fifaham
    @fifaham 4 ปีที่แล้ว +5

    Amazing presentation - I wish we had similar computer applications that can do those graphics presentations when I was in the university

  • @johnaybier418
    @johnaybier418 6 ปีที่แล้ว +39

    Mindblowing representation. My first thought: DNA

    • @alikhan81
      @alikhan81 3 ปีที่แล้ว

      you mean RNA?

  • @sandhyasandy9269
    @sandhyasandy9269 9 หลายเดือนก่อน +1

    aree yaarrr u came up with such a amazing video on youtube .really very very happy after watching this video 👏👏👏👏👏👏👏

  • @wernervannuffel2608
    @wernervannuffel2608 5 ปีที่แล้ว

    For all frequenty modulation synthesis sound designers this video is a goldmine !

  • @photon2724
    @photon2724 5 ปีที่แล้ว +9

    Now it's not every day that higher level mathematics blows your mind!

  • @TheWindsofWonder
    @TheWindsofWonder 6 ปีที่แล้ว +127

    Me during the entire video: “YOOOOOOOOOOOOOOOOOOO”

  • @sanjiblamichhane
    @sanjiblamichhane 3 ปีที่แล้ว +8

    25 years in college and now this video to understand a circle. Welcome to engineering baby :D

  • @jamesday1295
    @jamesday1295 6 หลายเดือนก่อน

    3yrs since I last praised this video, apparently.
    The beauty of seeing familiar 2d waveforms in 3D with waggling sticks still makes me smile.

    • @EugeneKhutoryansky
      @EugeneKhutoryansky  6 หลายเดือนก่อน +1

      I am glad you enjoy my video.

    • @jamesday1295
      @jamesday1295 6 หลายเดือนก่อน

      @EugeneKhutoryansky really good :) I'm not sure why, but visualising a mathematical concept seems to come much less naturally than something abstract, which is a bit odd. It took me back to my apprenticeship, watching the oscilloscope as i plugged in / unplugged various modules, watching the waveform change, clipping, filters etc. I understood an 2 inputs give a certain output, but just couldn't visualise the process.

  • @charithjeewantha
    @charithjeewantha 2 ปีที่แล้ว

    I think this is the best use of 3D animations I have ever seen in the internet!

  • @NityanandaHazarika
    @NityanandaHazarika 7 ปีที่แล้ว +8

    omg! I never imagnined sine waves in 3D ever. Thanks for giving the feeling.

  • @om1gee
    @om1gee 6 ปีที่แล้ว +11

    Wow, this is the most relaxing thing I've seen on TH-cam! So beautifully made with the music in the background ! The ending is amazing, too :) You think you're searching a rather dry and boring topic on TH-cam and than you find art like this :-D

  • @barbequelove
    @barbequelove 8 ปีที่แล้ว +11

    Wow, this is freaking amazing, this really helps solidify my understanding!

  • @jayelms2706
    @jayelms2706 4 ปีที่แล้ว

    I can't believe there are ones who don't like such a super professional and clear presentation !!!!!!!!!!!!!!!! Might it be envy? Btw, such a neat voice can only come out from someone who understands how Fourier Transform works inside her throat.

  • @random-ye9hb
    @random-ye9hb 2 ปีที่แล้ว +2

    The idea of putting the θ as the 3rd dimension makes it easier to understand

  • @Prometheus4096
    @Prometheus4096 8 ปีที่แล้ว +24

    Couldn't get over the random Liszt.

  • @ndv2212
    @ndv2212 5 ปีที่แล้ว +17

    each time I watch this video, several ahh moments happen haha. Thank you so much for this helpful vid with beautiful graphical representation!

  • @Eloss69
    @Eloss69 5 ปีที่แล้ว +12

    The best music for the best subject

  • @OjashShrestha95
    @OjashShrestha95 3 ปีที่แล้ว

    This video invoked the feeling of pure ecstasy. God Bless you!

  • @z00ey
    @z00ey 2 ปีที่แล้ว

    beautiful - even the orchestral swells are perfectly timed to the revelations of the changes in perspective. You've given us all at the next evolution of learning maths

  • @vex_ahlia7
    @vex_ahlia7 4 ปีที่แล้ว +3

    you had me hooked at 0:43 with that change in perspective.

  • @krzem3532
    @krzem3532 7 ปีที่แล้ว +5

    OMG this is an amazing explanation! Thank you so much!

  • @1anya7d
    @1anya7d 8 ปีที่แล้ว +120

    At /least/ the music background was /Liszt/

    • @avnit_singh
      @avnit_singh 7 ปีที่แล้ว +1

      please link me original of this music composition

    • @bhaskarmukherjee4768
      @bhaskarmukherjee4768 7 ปีที่แล้ว +17

      It's called hungarian rhapsody no 2. it was originally meant for piano. But there are orchestral versions of that song too.
      th-cam.com/video/7H99FM6S8rU/w-d-xo.html

    • @TheDavidlloydjones
      @TheDavidlloydjones 7 ปีที่แล้ว +10

      Mozart said that a woman's breast should be the same size as an honest man's hand.
      Liszt agreed, but his hands spread to a thirteenth on the piano.
      This was reported to me by a woman who wore a 43-DD.

    • @ronin6158
      @ronin6158 6 ปีที่แล้ว

      I think not coincidental, since this is also all about how multiple fundamental sine tones come together to create beautiful diverse timbres.

    • @youderektube1
      @youderektube1 6 ปีที่แล้ว

      which reminds me; I haven't seen any Jos Leys videos lately...

  • @hansenw9366
    @hansenw9366 2 ปีที่แล้ว +1

    That process is also called analysis. An example application would be decomposing the waveform of a musical chord into terms of the intensity of its constituent pitches. The term Fourier transform refers to both the frequency domain representation and the mathematical operation that associates the frequency domain representation to a function of space or time.

  • @navidjabarimani3678
    @navidjabarimani3678 ปีที่แล้ว

    this video was just amazing in every sense, music, animation, voice-over, and information were just perfect

  • @nictai186
    @nictai186 6 ปีที่แล้ว +4

    work of genius. i wish i have seen this 5 years ago. lol

  • @omsingharjit
    @omsingharjit 5 ปีที่แล้ว +9

    1:22 sine wave perfect Animated Explanation

  • @ImTheMargo
    @ImTheMargo 8 ปีที่แล้ว +11

    The guy at 14:06 is brilliant. Thanks for adding him)

    • @aname6142
      @aname6142 8 ปีที่แล้ว +2

      +Maral Gurbanzadeh
      lol a little something for the ladies for a change ! (:

    • @rajnikanthdsp4368
      @rajnikanthdsp4368 6 ปีที่แล้ว

      what a concentration

  • @lexsoft3969
    @lexsoft3969 5 ปีที่แล้ว +2

    I only know the formula defining Fourier transform and Laplace transform and used them for analyzing linear systems. I loved how Laplace transform method simplified the way for solving linear 2nd order ODE which was commonly found in RLC circuits. Found their application also in Control Engineering both in conventional and modern methods using state space.
    But now, having been working as software developer for years, I forget many things about them, except the formulas. :)

  • @cactusheart9632
    @cactusheart9632 5 ปีที่แล้ว +2

    And to think that you got your bachelor's in EE from the same University as me.. very impressive video and conceptualization.