What is Convolution? And Two Examples where it arises 

You made hours of confusion disappear within just 4 mins! Thank you!

I am convinced that you need to have a gift for making students understand the concept.....not just degrees. Thank you for uploading

I was struggling with this for 2 weeks, and my professor gave 2-4hr lectures on this. But you made me understand it in just 7 mins, excellent teaching. Thank you so much.

Learning engineering is fun when it is taught like this! underappreciated content.

Had been searching for a genuine video which could make me understand that formula of x(Tau).H(t-Tau). Since i am from pure mechanical background and was studying control system, this term came up and searched for 3-4 hours going through 5-7 videos. Thanks a lot for this beautiful and easy explanation of this concept.

I am so excited to watch such a great lecture, all my confusions from my professor's class just went away completely.

Very useful for whoever before getting your Signal & System course

it is the 1 & only lucid & concept clearing video on this topic i've got in youtube. thanks a lot for this.

You are the man Iain, thank you so much.

this video is so clear - it has helped me understand the concept so much!

Perfect explanation! Convolution equation video was excellent as well!

Excellent explanation. This is the beauty of a great teacher, who can think where the students might have questions and then give a clear and proper demonstration.

The video is so nice, it makes me so clear about origination of convolution. Thank you for such a nice explanation.

That was the best explanation I've ever seen about Convolution. I've studied this over years and always felt like I was missing something. This video filled out my understanding about the fundamental of convolution.

I've been searching the explanation of convolution all day and luckily ı seen your video.Thanks

This channel is my no 1 reference when i want to really understand a concept. Thank you very much 😁

I would say the best video on convolution intuition on RU-vid ❤️

Thank you so much ... I've been struggling for years to understand this concept in an intuitive way ... really appreciate it

You made it so easy and understandable, thank you very much.

Thank you 🙏

Damn, you finally made the concept click. Thank you for making the video!

Thank you Guru for all your insightful lectures. We owe you.

Thank you !

Such an clear explanation! I think I found an awesome channel (: Thank you! subscribing it right away

Thank You veeery much sir! I was having a lot of problem in understanding this concept but you explained it very excellently. Thank You once again.

Thank you so much!

thank you for this excellent explanation , i will do it to my students

good video sir...u explained how a student wants.. im amazed i saw many videos , but got clarity after watching your videos sir!

A very clear explanation. Thank you .

Thank you oh so so much. Thank you so very much.

Thank you very much. Its a very great video 📹

Awesome video man

i love the way you exapln thing with examples. do you have a series on analog circuit analysis?

Thank you Dr for this information

Before completing the video, I give like to your video...bcoz I know it's amazing

What an amazing video, it is very useful for a fresh acoustics student.

lovely explanation

great video .

great explanation

Perfect explanation thanks sir

Your voice is very attractive and can draw me into great attention .Otherwise I fell asleep . Great teacher

You reminded why I studied electronics 25 years ago. You also showed my we had some terrible teachers 🤦🏻‍♂️

Excellent work sir I was hoping if you could make a video on solving convolution using analytical method

Very very good. I comes from China，it really helps me！！！

Wonderful explanation my friend! Life cannot be easier :D

Good video bro..., Keep doing it👍 And also put a separate video on What is Correlation & Autocorrelation?..... I'm waiting

Great video

Good stuff. Can you make your voice much clearer, finally conceptual explanation is super.

at moment 09:10 why we supposed that the output signal would be like that ?! I think it's gonna be a straight line lying on the t-axis why my idea is wrong as the Z(t) is an infinite number of delta functions?

What exactly do you mean by the first function being time invariant? h(t) is not a constant, so it literally varies with time.

why we need to flip the tau in definition? what will happen if we dont flip? what is the intuition behind this?

h(t)->h(t-\tau) has a flip on x axis, it would be helpful if you can point out that, otherwise, people may get confusion how h(t-\tau) sliding on the x axis.

Sir I'm struggling with one doubt here that if we approximate our x(t) as the sum of impulses which are very close to each other. Suppose before approximating x(t) as impulses at particular time say t=1 it will have some finite value. If we approximate it as impulse then at same time t=1 we get infinite value because amplitude of impulse is infinity. Kindly please solve my doubt

Can the convolution of two non-zero signals be a zero??

waw

How can we write x(0)h (t) +x(1)h(t-1)+x(2)h(t-2) as we know x(0)=infinite as it is height of impulse?

I wish my teacher had the same skill set of explaining things, rather than dumping.

Noice!

at 8:14, x(t) or z(t)?

Telling the application of convolution in terms of signal processing may help a part of people in the telecommunication and eee engineers but when convolution meets signal processing it also is used as a filter but my question is I have read convolution even it's useful for mechanical engineers such that in resonance when a failure occurs not due to massive force hitting an object results in large deformation could cause failure or an large impulsive force acting on it for a duration of time could cause failure but there is an another phenomenon where the natural frequency of any object is reached the energy builds in it very high and could cause a failure in this manner a small disturbance which accumulates over a time and causes a high energy to build in the system due to energy very high it causes stress and the system collapses this is highly different from stability perspective of control system being not stable does not mean it's accumulating energy inside it but in case of amplifier there is an capacitor or inductance device which causes the attenuation in the electrical signal and filters some frequencies but in other perspective amplifier amplifies the signal such that it stack ques and scales the signal but I don't know this is done by capacitor or am inductor but convolution is useful to both mechanical civil eee ece and every applied scientist and engineers hence it's used as a filter in an circuit or used to amplify but even transistor amplifies the signal without an capacitor or an inductor I guess also mechanical engineers can use it to model resonance hence the energy inside the system build high by periodic accumulation of the system reaching its natural frequency which leads to failure and I can also tell you that when amplifier filter or amplifies the signal it used convolution hence it's useful to every applied scientist and engineers but not to mention the pure Mathematicians use it of convolution of kernels thankyou guys some of my inference could be wrong if somebody or the author of the video is familiar with it please correct the above and educate me thank you for the wonderful video sir

Supeeeerrrrrr

Thank you!