Periodic and Non-Periodic Signals

Signals & Systems: Periodic and Non-Periodic Signals
Topics Covered:
1. Definition of periodic signal.
2. Condition for periodicity.
3. Fundamental time period.
4. Fundamental frequency.
5. Fundamental angular frequency.
6. Condition of periodicity for discrete time signals.
7. Periodicity of dc value.
8. Fundamental period of dc value.
9. Fundamental frequency of dc value.
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#SignalAndSystemByNeso #Signal&System #PeriodicSignals #NonPeriodicSignals

[@vidhanmaheshwari2082]

College: exam time Me: neso time Thanks a lot sir.

[@vcbcricavenue2235]

260K views , you gave life to lakhs of people, good job , god bless you

[@srihitha4352]

Neso Academy..you deserve millions of subscribers..☺️

[@sadikmuktar9961]

It reach almost 1 million

[@srihitha4352]

@@sadikmuktar9961 yaa😌..happy for #nesoacademy

[@GreenNutts]

@@srihitha4352 almost 2!

[@shaheergaming5386]

Enogh for that

[@upendarparshaboina1655]

Yah

[@guptaji15125]

Sir, if dc value considered, it has constant value for all the time, that means value does not repeat itself over time, that means it is aperiodic.

[@jakehealthx]

You put the fun in fundamental frequency.

[@jameserayburn]

Excellent video! Two thumbs up to you sir.

[@guptaji15125]

if periodic function is f, then can we declare f' (differential of f) should also be same for nT0, like in sin function (example taken), since in completing a period, it has same slope, please correct me if I am wrong (with reason)

[@binoykukku]

Thanks

[@karthiksubramaniyan4758]

At around 11:05, you had mentioned cycles per second for DC values which is 0. Could you please elaborate on what is cycles?

[@jay12maurya79]

Sir you make one video ..on your introduction..(about life journey)

[@rprvk]

Since DC is constant for all values of time we can take fundamental time at any interval as pie, 2pie etc since it same for all intervals of time. We can consider it is repeating same at every interval.

[@trekalover5364]

As the definition says it's the smallest positive value, since DC is the same for all values, whenever we choose our fundamental period we can get a smaller one and so on, As there is no smallest positive value of T. if you take any choice you find another smaller one e.g. 0.1, 0.01, 0.001, 0.0001...etc, so the period is undefined

[@harshsharma-db6ui]

Hi Neso, Thanks for your tutorials but I am facing one problem. I am able to grasp the concept that you are teaching but when it comes to application of those concepts on questions I am fumbling. Please guide what should be done in order to be able to solve the questions. I am preparing for gate. Any book you would like to suggest from which I can do questions on SAS ? Also will there be more lectures coming in this series or I should look for other options to complete the remaining topics like DTFT, FFT, Digital filters etc ?

[@gangadharvishwabrahma6919]

Try some more solved examples, so that you will get your doubts clarified and try to make a brief notes wherever you feel difficulty so that you can revise those notes easily

[@Manasviswanauth]

Hi, How the dc value can be periodic if the fundamental time period is undefined.

[@DrOneforAll]

Why do we take 2π as the fundamental for To instead of π

[@alihamid9761]

Because after 2pie cycle repeats itself

[@abdelrhmanhamed4045]

God bless u sir

[@souradipkumarsaha9267]

Dc value is periodic in nature...but the period is undefined...dc is a constant value ...and for any T or N it will be periodic

[@dpm_07]

Please upload a video on Bounded and unbounded systems

[@hashirwaqar8228]

Sir but in earlier lecture u explained that dc is not signal at all

[@guruprasadnayak1692]

if x(t)=A then it is periodic or non-periodic?

[@nickthewinner2194]

its good to have straight A's

[@sadikmuktar9961]

Yep😊

[@nickthewinner2194]

@@sadikmuktar9961 keep staying positive :)

[@sadikmuktar9961]

@@nickthewinner2194 Ok

[@suyashdutta5267]

Is Principal of digital communication (pdc) and signals and systems name of same subject?

[@amitagiri2023]

11:00 but DC is not a signal, because it is not dependant on any variable, then how can it be periodic signal?

[@sf3l493]

Thank you very much ❤

[@vintibhatia5365]

Sir, Why we're checking whether dc is periodic or not. It is not even a signal acc. to the definition you told us. Right?

[@sonalisharma9659]

Sir i have doubt how dc sig is a periodic signal. Bcoz in book it is given that dc is aperiodic signal

[@prakashchandrajat9752]

is any signal have infinite F.P. ? ( If we put infinite value then what will be the type of signal ( d.c. or not)?

[@sarweahe.bailey1385]

D C

[@ashutoshsharma8227]

but what will be the period of the constant function if it is peridioc

[@mono_drift]

great video! Loved it :D

[@binusnbayothegrey]

thanks a million

[@tuanduynguyen1500]

really easy to understand!! thanks admin

[@gamerhacker4918]

Sir in first lecture u said dc signal is not a signal it's just dc value but in ur presentations everywhere ur saying it's dc signal why 🧐🧐🤔🤔pls respond

[@abdelbasetelhangari645]

Waiting

[@ssb9892]

Check periodicity of x(n)=2u(n) and x(n)=(-0.3)^n . u(n)

[@badugumuniteja6397]

sir why dc signal is periodc explain with neatly sir

[@SammuBumBumkiMumma]

thank you for such easy explanation.. sir pls upload videos on energy and power signals also

[@barsilgen120]

Thx sir

[@tashi2009]

next time while you record the videos plz try to increase the volume. .I increase the volume to the maximum but still its barely audible. .

[@veerendraprasad5919]

Voice is very lovw

[@WeTravel2023]

Unit of Time period must be in sec or miniute or hours . Dn how T0 = 2pie

[@rajyagurukrunal3865]

Your language is very easy to understand and concept are easyl understand

[@ThatEsque]

Today i have my backlog exam of this paper, i wish i never have to learn again.

[@hitikasardana7763]

Why fundamental time period of dc value is undefined ?? When T0=smallest integer Which is 1 here Then T0 must be 1 for dc signal

[@Iam0ne1]

because it can be any value.

[@TahlilAhmedchowdhury]

Smallest value may not be 1. It can be .01 or .001 or .000001 etc. Thus undefined.

[@shreyasuresh8291]

Guys! Sin √2 t is periodic or not plz reply as soon as possible!

[@abdelbasetelhangari645]

Consider infinity

[@StudyMatrix]

@@shreyasuresh8291 yes periodic

[@abdullahzahid7369]

i n the first lecture u said dc is not a signal and then u are using dc value in periodic signal

[@myonlynick]

Sometimes he says that dc is a value not a signal, sometimes he says that dc is a signal. In this video he says that dc is periodic(which is a property of signals, which means that dc is a signal!!). I think he likes to mess up with the viewers. I asked him to clarify the mystery in 4 different videos about dc. He does not respond. He simply enjoys the confusion he creates.

[@anjumanoj4703]

I have the same confusion regarding dc value

[@myonlynick]

i went through oppenheim's book and signal and systems from schaum outlines series ( where this video series seems to heavily rely on). Even in these 2 books there is not a clear answer. The books say it is a periodic dc signal but..... I also checked quora answers on this question and it seems to be an never ending debate... Until i find a solid final proof i suppose treat dc value as a signal or not as a signal,periodic or not periodic depending on per case. Although, the confusion remains.

[@myonlynick]

Neso Academy, 'DC is a signal but it does not satisfy the purpose of a signal.'. Good. The purpose of the signal is to convey a desired information from Tx to Rx, i suppose. Does your reply here also mean that it is wrong your claim in digital electronics video series(video 2- what is signal, at 6::23).? Over there you clearly say that DC(Direct Current) is not a signal :). i am not aiming to degrade your work, but to clear the confusion. You make great videos.

[@takiaesha9522]

your sound quality is not good enough...it is very low...when i see these tutorials,it is really very tough to understand without high volume of my headphn...

[@mohit_kmeena]

Your earphones are of low quality, his voice is clear

[@razazaidi4236]

@@mohit_kmeenabruh her comment was 4 yr ago

[@joyitachakraborty2863]

​@@razazaidi4236😂

[@sunnyitssimple]

​@@razazaidi4236😂

[@adithyakrishna4396]

Lol

[@poulamim06]

I am following neso only ...

[@mohsenmak2769]

u explain perfectly but speak so fast. thank u

[@pavankumarkachala509]

then decrease the playback speed

[@sarweahe.bailey1385]

x[n]=cospad div 3 n + sinpad div 4n I DON'T HAVE MATLAB ON MY COMPUTER

[@challamahesh2199]

hi

[@muhammadmaarouf9560]

how can you say in next lecture !! That To can not be infinity but if you calculate it in dc from fundamental frequency you will find To zero !!

[@badboy-hu4bx]

sir videos are gud but plz comeup with new videos fast as soon as possible bcoz .....we hv to study a subject in one semester

[@happyteen7195]

try to use proper mic . bcz sound comes very low

[@jay12maurya79]

👍👍

[@moviesera5250]

Periodic

[@EngrAbid613]

DC signal not a periodic ... Because it does not repeat itself in the Equal interval of time...

[@shreeshdivyamsinha1603]

9:21 false, as it donnot have any fundamental Period.

[@navyagayathri449]

Even though we increment the time by 5sec it is remaining same i.e it is not depending on the time As u taught in before lecture if it is not depending on time it is not a signal, but here how could it will be a signal

[@Full-stack1198]

i gues the fundamental frequency is 0 because the period is infinite so 1/infinity =0

[@jaidevk8823]

Non periodic signal is not available

[@poulamim06]

Can u explain more clearly please???

[@Tahir-khan75]

solve this sint+sin2t

[@guptashashwat]

Bhai sin ka period toh pi kisine bola bhi nahi

[@wonkeisaacmahlombe3803]

gud

[@sarweahe.bailey1385]

x(t)= Sin 2t someone please do this problem, sin is 2 squ

[@rustynation8209]

T-series??

[@C-ManjuBoina]

We need still more clarity

[@akhil9042]

...

[@vanshhans5676]

Your voice is so low in every video

[@piyushbhardwaj7147]

baat na chl ri didi te??

[@shubhamrawat6838]

na chal ri bhaiyya 😥

[@sarthakmalik0810]

Padhai na chl ri copy te?

[@piyushbhardwaj7147]

yahaan coffee chal ri hai biscuit te

[@kushshukla6588]

@@piyushbhardwaj7147 are bhai 😂😂

[@shubhamrawat6838]

better than our psychopath

[@vhavuk3901]

areee kehna keya catee ho?

[@sadatmalk6334]

thanks