Time domain - tutorial 3: signal transformations

In this video, we learn how different transformations can change the signal shape. Specifically, we cover time shifting & scaling as well as amplitude shifting & scaling. The concept behind each transformation is intuitively explained using music.
Learn Signal Processing 101 in 31 lectures covering time, frequency and Laplace domain in about 8 hours all together:
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References:
[1] Alan V. Oppenheim, Alan S. Willsky, S. Hamid Nawab, Signal & Systems, 2nd Edition, Prentice-Hall, NJ, USA, 1996.
[2] Alan V. Oppenheim, Ronald W. Schafer, Discrete-Time Signal Processing, 3rd Edition, Prentice-Hall, 2009.
[3] Michael D. Adams, Continuous-Time Signals and Systems, University of Victoria, Canada, 2013. Free textbook and lectures (courtesy of Dr. Michael Adams):
Link to the Dr. Adams' textbook: bit.ly/37rkwDC
Link to the Dr. Adams' lecture slides: bit.ly/2WrwHKy
Music - "COFFEE" by Josh Woodward. Free download: joshwoodward.com/

[@mihailung1720]

Someone call this man back already!!!!

[@imanmoaz]

I am still waiting ;)

[@kabascoolr]

This is incredible! Just started graduate school after years of working in industry, thought I still have a high level understanding of these concepts this series was a much needed refresher.

[@imanmoaz]

Thank you very much for your feedback. Pleasure to help ;)

[@luqmansen]

Best signal processing series on youtube, thanks iman !

[@imanmoaz]

Best comment ever ;)

[@qiaoqiaozhu2450]

Life Saver!!!!! Best signal processing tutorial ever!!!!!

[@imanmoaz]

Thanks a bunch!

[@sancti-paprichio-music]

THIS IS PURE GOLD

[@imanmoaz]

Thank you very much, my friend!

[@reuben5627]

I have never found a better explanation on signal transformation like your, what was incredible is you even gave applications, this is sweet. At first I couldn't understand why it is multiplied or divided.

[@imanmoaz]

Glad I could help! Thank you for your feedback!

[@otaruemma3803]

Same Here. I wished my lecturer had explained it like yours

[@pmtzy3768]

The fact that this gold content is free!!!.. God must be happy with me.
-(an atheist)

[@imanmoaz]

Lollll. The channel will stay free forever but accepts donation ;)

[@legendgamefun9566]

Amazing explanation. very clear and practical. Thanks bro

[@imanmoaz]

Glad it helped

[@kedareswarnaidutummalapall9308]

Learning is fun with your videos Iman . Learned something new. Thank you Bro.

[@imanmoaz]

Kedareswar Naidu Tummalapalli thank you very much ;)

[@aokay720]

This is THE BEST explanation!! Thank you so much!!

[@imanmoaz]

Cheers!

[@juusokorhonen1628]

Gotta say, these are fantastic. Thank you so much bro!

[@imanmoaz]

Gotta say, you are awesome ;)

[@ordls]

you are awsome! every video is much more clear than any lecture
thank you

[@imanmoaz]

You are very welcome!

[@harikrishan8279]

your teaching style is very good. I learnt a lot from this video.

[@imanmoaz]

Thanks a lot for your kind words. Cheers!

[@badreddinegacem]

You're awesome, man awesome

[@imanmoaz]

You are awesome too :)

[@hamidrashkiany3641]

Great job

[@jyotipurba3513]

U r just amazing brother!!!i had watched 50+ videos of signal processing..but that was not understandable for me!!! And when u said that this is iman in x(2t) ..that made me laugh ...overall u r the best in this topic

[@imanmoaz]

You are most welcome and thank you for your lovely feedback!

[@qasdheem8289]

At 0:46 to 1:00 really wonderful, it helped me lot sir, thank you sir

[@imanmoaz]

Pleasure to help Haseem!

[@uniqueramya3632]

This is really a good one:) Thank you!!

[@imanmoaz]

Thank you ;)

[@LIAFAROKHAH]

awesome sir, thank you

[@imanmoaz]

Pleasure to help!

[@abubakartalhajalil9961]

Awesome ,

[@Mahathep888]

You are amazing , Thanks a lot for your wonderful tutorial

[@imanmoaz]

You are very kind ;)

[@20.suriyam11]

THANK YOU IMAN FOR YOUR QUALITY CONTENT, PLEASE MAKE VIDEOS ON FILTERS

[@imanmoaz]

Thank you and please subscribe to stay tuned for more content!

[@user-xp3ky3ox3y]

It is Great Iman

[@MASadat-lz9yz]

amzing video! respect dude !

[@imanmoaz]

thanks for your kindness!

[@MASadat-lz9yz]

@@imanmoaz thank you brother for your supporting

[@yourcasualdeveloper]

THANK YOU FOR THIS AMAZING CONTENT❤❤❤❤❤

[@imanmoaz]

You're so welcome!

[@engineer491]

Sir can you please tell -x(t) and x(t)+ 1 with that example that you have used for others to demonstrate....
Btw really great explanation I'm enjoying signals for the very first time ❤❤

[@nevermindjustgoback7540]

hi im curious about what happens if we multiply the amplitude by -1 I mean when we multiply the amplitude by positive integers its magnitude increases which is ended up as a louder voice but what really happens when we multiply it by negative integers what kind of difference does it make on the voice

[@nicolaostoichfull]

5:00 priceless

[@imanmoaz]

Thanks a bunch, Nicola!

[@samisiddiqi5411]

This is fantastic. This is actually fun to learn lmao.

[@imanmoaz]

Gald you liked it!

[@satyamdubey4110]

Great work!

[@imanmoaz]

Thank you!

[@Andrei-ds8qv]

thank you man!! very nice tutorial!!!

[@imanmoaz]

thanks again ;)

[@yasinsimsek9368]

Dostum teşekkürler. thanks bro :)

[@imanmoaz]

teşekkür ederim ;)

[@israamohamed7160]

This is very fantastic
big thank you

[@imanmoaz]

Thank you very much for your big heart, Israa :)

[@kaciislammakour7333]

Incredible !

[@imanmoaz]

kaci islam makour thank you ;)

[@mosharofhossain3504]

thank you

[@imanmoaz]

You're welcome

[@user-oc2sd1zu7v]

hi iman i have a question
if x(t) = t
then to graph x(2t) = t we could do this
2t = u => t = u/2, therefore x(2t) = x(u) = u/2 which doesnt make the graph you show in the video, what am i thinking wrong? thanks!

[@abuabood67]

really great videos , you are really talented guy

[@imanmoaz]

thanks a bunch, it is very nice of you ;)

[@rahulbathini2214]

The videos are great but quick question, why doesn't the song play lime normal when I play it at x2 when you play it at slower pace

[@imanmoaz]

Can you please elaborate your question more?

[@rahulbathini2214]

@@imanmoaz I mean when you play a song at *2 speed, and I set the player to play at 0.5 speed. Shouldn't I get the same exact song as is. This I guess has nothing to do with the concept of time domain but something to do with the speed function in the players

[@ozzyfromspace]

@@rahulbathini2214 probably because of lossy compression of the audio file. Some information was lost, so we can’t recover the right pitch when we try playing at 0.5x. That was actually a good observation, Rahul!

[@shirinshafiee2647]

just the examples!:DDDDD

[@sofinaima4476]

I think that there is something wrong I will back later....good job thnks

[@marcojimenez9327]

LOL, great vid

[@imanmoaz]

thanks

[@beautyisinmind2163]

so the signal processing concept is similar to seismic signal too???

[@imanmoaz]

Yep ;)

[@MinhVu-fo6hd]

It is not rocket science. It is signal science. Lol

[@seanistrying]

i prefer your voice in 1/2 x(t)

[@imanmoaz]

Hahaa! Why is that? Is my normal voice super fast or annoying :)

[@seanistrying]

@@imanmoaz haha you sound more friendly :) can you possibly teach me how to draw a 2sin480πt + 3sin720πt? this is kinda urgent, thanks

[@khanhhuyen8630]

You're cute :> thanks

[@imanmoaz]

Loll! Thank you!