Essentials of Signals & Systems: Part 1

[@render_the_void]

This is exactly what I have been looking for for a long time! Thank you! I'm going to watch every video on your channel!

[@iain_explains]

I'm so glad you like the video. All of my videos are in categorised order here: iaincollings.com

[@ExplainingMathematics]

Hi Lain, thank you for sharing this amazing brainstorming classes. As Telcom engineer i find your teachings to be the fundamental and core of signal processing. I now subscribed!!!!

[@iain_explains]

My pleasure. I'm glad you like the video. Thanks for subscribing.

[@AUDIOETRADIOATUBES]

Sir, You are an excellent teacher. You teach an essential thing well beyond the simple transmission of knowledge: the desire to learn. I left my engineering school more than 37 years ago and to transmit my analog knowledge on my youtube channel, I fully appreciate the high quality of your teaching. Congratulation

[@iain_explains]

Thanks so much for your very nice comment. I checked out your channel. It looks like you've got excellent content - I just wish I could remember more of my schoolboy French lessons. Je ne parle pas Francais - is about all I can remember, unfortunately. ... oh and Vive la Tour! ... looking forward to July! 😁

[@hogsk1ee]

Currently studying Advanced tellecommunication at QUT. I have supplemented my learning with your amazing content, it has been instrumental for my understanding of OFDM!

[@iain_explains]

That's great to hear. I'm glad my videos have been able to help.

[@Lyle-In-NO]

Wow, oh wow, oh wow! I have found my candy store! I've been searching YT for such a channel, & I finally found it! I've always loved signal analysis but have been lacking fundamental understanding of many topics. I absolutely love this channel!

[@iain_explains]

That's so great to hear. It's always fantastic to hear from people who find the videos helpful.

[@elyepes19]

Thank you Mr Ian. The service you provide with these videos is invaluable. The clarity of your explanations are truly commendable

[@elyepes19]

If you could create a video on the Green's function and its connection to the Dirac-delta function, that'd me much appreciated

[@iain_explains]

Thanks for the suggestion. I've put it on my "to do" list.

[@uncleroq]

Thanks Professor. Good for students who are rusty.

[@iain_explains]

And also for students who needed to pay more attention in class 🤔😁

[@user-py4wr2wg8t]

thank you for your efforts. I hope all Profs learn from you how should be explained such complicated concepts

[@iain_explains]

Thanks for your nice comment.

[@leocmen]

God bless you

[@a.martini9522]

Thank you so much prof Iain Waiting for part 2 Sending love from Syria

[@iain_explains]

I'm glad you liked the video. Part 2 should be ready on Monday.

[@sudiptoshyam]

Going for an interview at an IIT ( KGP, India ) to pursue Masters on Signal Processing, and this video just summarises everything I studied for the topic. Please put up part two of this video by tomorrow. A humble request

[@iain_explains]

That's great to hear. I still need to finish making the Part 2 video. It should be ready on Monday.

[@sudiptoshyam]

@@iain_explains Thank you.

[@stephensu4371]

thank you Iain， i hope you make more of this， thank you

[@iain_explains]

Part 2 should be ready next week.

[@Suryateja122222]

wonderful teaching. Thanks a lot proffesor

[@iain_explains]

Glad you liked it

[@2262sandeep]

Sir, simply amazing work, and having seen your videos i am writing this even before viewing this one! which simply means that you are the GOD of your domain 🙇

[@iain_explains]

Thanks so much for your very nice comment. I'm so glad to hear that you are finding the videos useful.

[@uncleroq]

waiting on part 2

[@iain_explains]

It’ll go live at 10pm Sydney time on Monday.

[@fifaham]

Nice - thank you. The frame at time @19:00 should be printed as a poster and hanged on the wall as reference for all system work. In fact it makes great poster. I studied those things over 20 years ago, and I still need them.

[@iain_explains]

I'm so glad you think so. As you've probably seen, I put a "summary sheet" pdf image of each video on my website www.iaincollings.com/ Here's the one for this video: drive.google.com/file/d/19uTb-3W1G0ZfXCPU0aOfeKCZFFmQVD9p/view

[@fifaham]

@@iain_explains Wow you were thinking way ahead of me. Thank you so much for your great work and for your amazing contribution to our community.

[@fifaham]

@@iain_explains I will print it and hang it on my wall.

[@iain_explains]

My pleasure. It's great to know that my videos are helping people.

[@shauni_jade]

Hi Ian. Great video. I have a video suggestion: which are the essential mathematics to learn (or more like to master) for signals and systems? Thank you.

[@iain_explains]

Thanks for the suggestion. I've put it on my "to do" list.

[@ClementNyasuluziyan]

Nice explanation ❤

[@iain_explains]

Glad you liked it

[@nithinbabu4962]

Hi Professor, Thanks for the video. The received signal through a wireless communication channel is often represented as the product of the complex channel gain and the transmitted symbol in a given coherence time interval. Could you please explain what is not the convolution?

[@iain_explains]

It _is_ convolution ... it's just that in the cases you're talking about, the channels are "non-dispersive". In other words those channels don't have inter symbol interference (ISI). Which means the convolution reduces to a simple multiplication. These videos might help: "What are Flat Fading and Frequency Selective Fading?" kzbin.info/www/bejne/gZqugXmKadenfsk and "What is Intersymbol Interference ISI?" kzbin.info/www/bejne/f2GbaHmLq7xlr9U

[@nelebauer7864]

Hello, a generell question: after filtering, can we say that the noise power is 0 mW? Or is it still in B and the filtering just canceled the noise in the frequency range below and above my transmit bandwidth B (so it is always there and does not vanish anyway)? Thanks a lot.

[@iain_explains]

Hopefully this explains filtered noise: "What is Noise Power in Communication Systems?" kzbin.info/www/bejne/laLRZYWwgteLeMU

[@AndyTsui_1177]

The video on signals & is fantastic! You should really share your knowledge with college students in East Asia like my home country CN, their lectures simply suck. (Maybe you could join the Bilibili!) BTW, Prof. Collings, I am really looking forward to your reply about my joint Ph. D. application.😊

[@iain_explains]

I've looked into Bilibili, but unfortunately I don't speak or read mandarin. Sorry if I've missed seeing your PhD application. Can you please re-send it?

[@divyanshmittal772]

How the amplitude of convoluted cos got 1/2?

[@iain_explains]

This video should help: "Fourier Transform of Cos" kzbin.info/www/bejne/g5SshYGcpJh_gcU

[@nevis2769]

Bit confused with the first point - how can you replace the t variable with anything else and still have the same signal output (shape). E.g f(w) is by definition a different spectrum than f(t)?

[@iain_explains]

I think you're making the (common) mistake of thinking that a function is defined by what is in the brackets - but that's not the case. The thing in the brackets is a variable. It's not the function. Perhaps this video might help to highlight what I mean (although I think I probably should make a seperate video to explain this more directly): "Fourier Transform Duality Rect and Sinc Functions" kzbin.info/www/bejne/qIbKc5t7pcqkrtE

[@Soho9111]

I wished there was a KZbin beck to 2003 when I took this subject

[@iain_explains]

A lot has happened in the past 20 years! 😁

[@zaedabdulwali5592]

Great job. Do you have a funded phd position professor?

[@iain_explains]

If you're interested in a PhD please feel free to contact me offline.

[@Favouritehack]

I know my classmates are soon going to be here... alll of them

[@iain_explains]

Great. I’m glad you liked the video. Please spread the word.