Added: 3 years ago
From: drjmsantiago
Views: 44,884
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  • What is t and tau? Any explanation on that? Are they the same thing?

  • Thanks, this was helpful.

  • I owe this man a pint! Final in 2 hours, i finally understand it!

  • love this lesson

  • its just like reading a book, didnt understand

  • it is not convolving x(t), but x(tau), be careful!

  • Great work.Finally I got it.

  • how the t<6 in the last shifting ? please explain ?

  • @SufyanGhori

    From the last integration's result,y(t) becomes zero at t=6.

  • wow thank you so much this actually makes sense now lol.

  • very clear, thanks a lot

  • It took me 20 whole days to understand this concept. The hardest part was calculating the limits.

  • YOU SIR ARE A GOD

  • THANK YOU

  • I tip my hat to you good sir!

  • How does the shifting work ?

  • Thanks!!

  • thank you that was very helpful

  • @kostacs: its also true for that interval i.e. 2<=t<=4.

  • how do you know how much to shift it over?

  • Thank you soo much!  This was most helpful!

  • This is the best tutorial on the convultion integral I have seen - and that includes my University tutorial classes!

    After being hopelessly confused on where to obtain the limits of integration, during class and looking at textbooks, I got it straight away from your tutorial. I even managed to get the last part before watching the end.

    My only qualm is that I did not find this weeks ago!

  • Omg, thank you. You saved me from failing my test.

  • i realy would like to see how you get to the "marked" integral from the definition of the convolution, i understand what is being done with the "marked" integrals and why its being done but i have no idea how did you drive it out from the deffinition

  • wow, clearly explained and follows a logical progression why can't most college professors do that, im just amazed at how they can be so smart but be idiots when it comes to explaining something (i think if you cant explain something like this simply you just don;t understand it yourself)

  • thank you very much !

    Simple and clear !

    Greetings from Portugal :D

  • very good way of teaching i got it 100%, may ALLAH bless you respected sir

  • thanks so much professor.. it helped a lot !

  • very usefu ! 

  • Why have you just randomly selected points for your t axis limits?! you've just superimposed them without any scale...it doesn't make any sense and it's the only bit i dont understand

  • @PedSectioned I don't think you actually understand what the convolution integral does. You have to evaluate all the bits of the two functions that overlap for ALL tau. So you can arbitrarily move the transfer function along the tau axis, as long as you evaluate the overlapping parts. He's not superimposing them at a particular point, just showing the various parts you can evaluate. Probably look up the definition of convolution before you watch this. :)

  • Note that you actually use the operator * in 1:35 wrong. You want to convolute x(t) with h(t) not x(tau) with h(t-tau).

  • thx very much :)

  • my lecturer took 50 minutes to explain that and i learnt nothing,

    on the other hand you took 7 minutes and i understood it fully. fml uni

  • this could have been two minutes. well explained but wayyyy to elongated.

  • u saved my life ! :) thxx

  • Nice! :D

  • yeah how do you get that interval from 0 to 2????

  • In this region, x(tau) exists for tau = 0 and tau =2 and is zero else where

  • @techkuwa see the input graph x(t). The limit is from 0 to 2 there. So, when you convert x(t) to x(tao), tao's limit is also 0 to 2.

  • 4:35 thau between 0 and 2 is just looking in at the drawing or you deduct it in some way?thanks

  • nice!

  • thanks :)

  • finally I get it!

    pausing & rewind at each time, but clear now... lol

  • Wonderful!!! Thanks a lot... I understood the concept clearly ..

  • Thanks!!..This cleared things a lot! :)

  • Comment removed

  • God bless you, sir. Best 7 minutes of my student life :)

  • thx!

  • Thank you SO much for this!

  • very helpful, thank you!

  • OOHH really good and absolutely worths for 7 minutes. thnx

  • Great, i finally understand how to determine the integration limits, thank you!

  • @MartenThuren

    I don't get it :( how do you do it ? , I don't know why to start shifting from 2:08 :(

  • THANK YOU~!!!

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