What is convolution?

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  • Опубликовано: 30 окт 2024

Комментарии • 18

  • @iabervon
    @iabervon 2 дня назад +10

    One day in my ~applied odes class, the TA made the off-hand comment that convolution is like a dot product in an uncountably infinite number of dimensions. Thinking about how that's true and how it's different was really useful to me for developing an intuition for convolutions. (I was also amazed by how much it sounds like technobabble but actually helps to remember the formula.)

    • @nestorv7627
      @nestorv7627 2 дня назад +2

      If you take discrete signal processing, the convolution is exactly this, but the dimensions are countable.
      If you take continuous signal processing, the convolution becomes what dr peyam explained in the video

  • @elyepes19
    @elyepes19 2 дня назад +1

    Many, many deconvoluted thanks for your valuable videos Dr Peyam

  • @nestorv7627
    @nestorv7627 2 дня назад +2

    Convolution is an operation that determines how one function influences another function on a point-by-point basis, especially useful when a function is not discrete (i.e. continuous). Like someone else mentioned, it's like an infinite-dimensional dot product.
    Examples include: impulse response functions in electrical engineering signals.
    the distribution of the addition of two random variables in probability

    • @drpeyam
      @drpeyam  2 дня назад

      I really like this explanation, thank you!!

  • @hehehepaitachato9184
    @hehehepaitachato9184 2 дня назад

    Thanks for the class, Dr Peyam! I've already seen this before on ODE classes, but never understood so profoundly

  • @theproofessayist8441
    @theproofessayist8441 2 дня назад +1

    Thank you for the demo. You are going above and beyond. Also love how the point of this video is hmmm we have a theorem or statement that does not work (or is nice) - let's tweak our definition of multiplication so that it is true and indeed convolution is our gal we need! :)

    • @drpeyam
      @drpeyam  2 дня назад

      Thanks for watching!

  • @uvtears
    @uvtears 2 дня назад

    Yayyy you actually did it !! Thank you Dr. Peyam💕

    • @drpeyam
      @drpeyam  2 дня назад

      My pleasure 😊

  • @YouTube_username_not_found
    @YouTube_username_not_found День назад

    What's more interesting is the fact that multiplication of time-functions gets transformed into convolution of frequency-functions.
    Edit:
    I omitted a factor of 1/(2i×pi) and other details, they could be found in the Laplace transform article on Wikipedia, in the section "properties and theorems".
    Also, doesn't the star symbol represent cross-correlation? Isn't convolution denoted by an asterisk? At least that's what I noticed in other sources.
    Last thing, it would be a good exercise to find all pairs of functions that make the LT of multiplication equal the multiplication of LTs.

  • @johnfakes1298
    @johnfakes1298 2 дня назад

    cool video

  • @phill3986
    @phill3986 2 дня назад

    Nice 👍🎉

  • @AlBoulley
    @AlBoulley 2 дня назад

    “it do not be like that”

  • @jesusdanielgaytanlopez3145
    @jesusdanielgaytanlopez3145 2 дня назад

    Where are the notes?

    • @drpeyam
      @drpeyam  2 дня назад

      sites.brown.edu/drpeyam/apma0350/