Lec 2 | MIT RES.6-008 Digital Signal Processing, 1975

Lecture 2: Discrete-time signals and systems, part 1
Instructor: Alan V. Oppenheim
View the complete course: ocw.mit.edu/RES6-008S11
License: Creative Commons BY-NC-SA
More information at ocw.mit.edu/terms
More courses at ocw.mit.edu

[@ashimhaque]

I don't even know how to thank you sir. It is because of people like you that students like us who doesn't get proper educational opportunity and guidance even after going to an engineering school due to lack of resources, gets opportunity to learn. These educational videos are the soul and hear of KZbin and what the power of internet can do to humanity. I wish with all my heart that one day a genius from anywhere in the world would watch these videos and revolutionize the field of engineering like you did with your texts and teachings. My utmost respect to you.

can you imagine, while we are in abundance of information that is here to move us into the future, in some countries, sites like KZbin are unavailable due to government restrictions....

[@tanish2711]

I wanna like this comment, but i dont wanna disturb the 69 likes

[@zixshao6972]

@ totally agree with u

[@ankurdev1419]

Its 35yrs since it was recorded, and its still magical. Respect Sir. Knowledge in its pristine form (y)

[@ahmadnasrulnorali5867]

So this is the author (or co-auhtor) of the legendary Digital Signal Processing textbook, published by Prentice-Hall.

[@DdragonPT]

The way the courses from this Professor are lectured are fantastic. Thank you MIT and Alan Oppenheim

[@PeterB396]

This shows us, sometimes the less views or comments a video was given the more valuable it might be, far beyond easy to consume mainstream stuff. Really neredy :)

[@inactiveaccount9866]

Thank you Sir Openhim for these briliant lectures, more thanks to MIT for providing us with such valuable resources😊

[@alxjones]

w = 3π/7 is periodic with period 14. You can actually see the first 3 and the last 3 samples on his graph are the same. To check if it's periodic, you need to see if there is an N such that w*N = k*2π for some integer k. In this case, if N=14, 3π/7*14 = 6π = 3*2π, so it is periodic.

[@IvoTebexreni]

You are rigth, he point that out on the text material of this course

[@nipuniherath8639]

Wow this explanation!!! The best one ❤️👌

[@JamesTiberius-pw1du]

Oppenheim set the path I would take in life. I had the original DSP hardcover textbook. Back then probably $20 or so. I was taking complex analysis when I took DSP in the math dept as a math theory class. How many of us in the early days of neural networks carried his book. MIT needs to do an AI enhance on the videos.

[@teleengineer]

Many thanks for these lectures Sir..

[@JamesTiberius-pw1du]

Oppenheim lectures are like the Feynman lectures. The processing in my iPhone is based on the Oppenheim book.

[@andrew01]

This is extremely helpful. Thank you for providing such a valuable resource.

[@VitorML34]

Thank you very much sir!!

[@oneforallah]

He teaches so much better than my professor !

[@WhileTrueCode]

HHAHAH the voiceover corrections add the touch of unintentional humor that this needs

[@abdullaholcay4789]

Some of those you can wrestle with in study guides :D

[@darkstar7197]

at approx 33:00, i don't understand why the signal is left shifted? Can someone please explain.

Umar K -4-k=-(k+4)=>flip and shit to the left by 4 capisce?

[@rishipl3559]

Because h(k) is signal when h(0-k) = h(-k) so h(-k) is absolutely time shift or opposite to the h(k). Do you understood?

[@HeltonMaia]

Attention: at 6:00 minutes in Unit Step, use u(n) = 0 for n < 0.

[@shahidnasir7851]

He read it correctly and later at 6:30 he said, it should'nt be less than and equal to zero.

[@vinaykushwaha5223]

do you know who is this legend ? He can't make a mistake like this even in dream.

[@misnufkin1]

I don't understand why it equals 1 and not -1 ‏‪8:08‬‏

[@iSolarSunrise]

Learning DSP from pringles man... Awesome.

[@freddy88nor]

Is the book Discrete-Time Signal Processing (third edition) the right material for these lectures? or is there other video lectures out there for that book?

[@rishipl3559]

Yes Discrete-Time Signal Processing is the right book

[@nerochu-luntai6205]

@@rishipl3559I use this book in my engineering school“Essentials of Digital Signal Processing”, by Lathi and Green, Cambridge

[@aikenji8298]

if omega =rational number times pi then it is periodic, so 3/7pi is periodic

[@IvoTebexreni]

You are rigth, he point that out on the text material of this course

[@kavithaviswanathan7212]

Yes...it is periodic with period 14.

[@bingfengzhe]

nice

[@ConsciousnessIsMyGod]

Miss his fractal tie

[@StryfeDChaosBringer]

^ unnecessary comment, he corrects it in the video

[@Alexander5R]

I think that I was taught all this in 8th semester of collage.

[@muhammadanas459]

80,319 views till 1 dec 20 and only 448 likes come on guys.

[@kavneetrekhi]

this was recorded in 1975? :o

[@rishipl3559]

yes

[@Er.Sunil.Pedgaonkar]

In those days Computer Science Engineering bachelor's & master's degree should have DSP & DSPr ( Architecture & Interfacing) in their syllabus curriculum

[@Seleno_phile]

November 2020

[@rishipl3559]

Lol....!!! CGI, Graphics in 13:18 watch sinusoidal letter in board.

[@LenoTavaresCabral]

(Y)

[@sanjeevdutta7760]

Complicate d

[@fuahuahuatime5196]

liek dis if u fall 2 slep ever tyme