Time Scaling of Continuous-Time Signals

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Signals & Systems: Time Scaling of Continuous-Time Signals
Topics Covered:
1. Types of scaling.
2. What is time scaling?
3. Time compression of a signal.
4. Time expansion of a signal.
5. Shortcut method for time scaling.
Mistake @7:01 The range should be (-1,0) ∩ (0,+1)
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#SignalAndSystemByNeso #Signal&System #TimeScaling #TimeScalingOfCTS

Опубликовано:

15 авг 2016

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Комментарии : 103

@KhoaNguyen-wp8lz 3 года назад

I love people who write "x" like two letters c, and number "1" is in a full way, not just a stick. Very few people do that.

@amankumargiri3163 3 года назад

Koi sense h es baat ki?

@nagamalleswararao6032 3 года назад

I will do like that only... 😅😅😅

@Noble_Isaac 3 года назад

@@amankumargiri3163 ??

@nitigyajoshi4658 3 года назад

@@Noble_Isaac he is asking in a humorous way that this thing has any sense?

@kushshukla6588 3 года назад

@@nitigyajoshi4658 tum to bade heavy explainer nikle 😂😂

@varunsingh9432 7 лет назад

dear sir your videos are really great and helps in understanding, but when we open the question everything seems as they are very complicated so I request you if you may please upload typical examples and how to solve them, it would be a great way then to understand

@ovidiochavez6865 2 года назад

Love how you explain the topics and repeat what u just said to reinforce us , just as good if not better than my college professor 👍🏽

@swaminathavijayaraj 6 лет назад

The lecture is very nice, only point I think will make this videos to next level is, Telling why this concept is important and practical application

@akhiljangili1234 3 года назад

Sir in the 1st case why you took t=1 instead of t=2 to find the amplitude

@praveenav9376 3 года назад

Your explanation is too good sir😃😎

@rockyyadav5112 5 лет назад

In the first case why we find the amplitude at t=1 and not at t=2

@muhammadmaarouf9560 4 года назад

cuz you make 0

@prashanthipole1750 3 года назад

Bcz we can't change the original signal so we want amplitude 2 so by which value multiple to get 2 that t=1

@ruhilfamily1492 3 года назад

ty i was also confused

@gkk8409 6 лет назад

Sir pls explain about time scaling for discrete signal.

@manikoteswararaogarlapati9328 5 лет назад

Which text book is more preferable to u'r lectures

@tempest7074 Год назад

i don't understand how to get the range of alpha?

@Pixy643 7 лет назад

thanks for making so many useful lectures...could you make time scaling for discrete signal ? request...:)

@barsilgen120 10 месяцев назад

Thank you for the video.

@VinayKumar-sy3oj 3 года назад

Doubt:- @7:03 Given as (-1,0) U (0,-1). Which is not correct. Then replaced Symbols in Video Description UNION-U with Intersection and -1 with +1 :- (-1,0)^(0,1). But intersection only gives common value So, only value 0 But not other +ve or -ve values + 0.1,0.2,0.3...+0.9 or -0.1,-0.2,-0.3...-0.9. Hoping operation symbol might have to be ∆ A∆B = AUB -A^B So, (-1,0)∆(0,1) ^ means Intersection. If Any mistake kindly correct me.😉

@yagnatherapybydromtrivedi971 2 года назад

@9:18 sir can you explain that for case ii, the x(t)=0 when t=0 ,still you've plotted x(t)=2 when t=0 kindly exp thtin case kf expansion i.e. case ii)

@mybaby1235 7 лет назад

@ 7.03, Time range should be (-1,0) U (0,1) right?

@Dontever_throw_trash_out 7 лет назад

Neso Academy worring abt that me also😀

@velusamym2801 3 года назад

I think that is 1

@VinayKumar-sy3oj 3 года назад

Yup, NESO mentioned that mistake in Video Description.

@VinayKumar-sy3oj 3 года назад

@Hokageminato 2 года назад

@@VinayKumar-sy3oj its just union

@JuanMorales-ip9so 4 года назад

first case divede and second case multiply. got it

@avishekpaul2000 7 лет назад

There is a slight mistake in the set declaration in case II

@FaizanKhan-hc7vn 5 лет назад

thanks dear sir

@gkk8409 7 лет назад

it will be still better if you take examples of discrete time signals also

@vintibhatia5365 3 года назад

2:34 the plot shouldn't have the vertical line at t=2. Correct me if iam wrong?

@heisvandien3789 2 года назад

How do you solve this, for t = -3 and t =+3 plot the signal of x(t)=t^2+3 and x(t)=2t?

@jimmoriarty6964 6 лет назад

Sir, may I ask what book are you using in this lecture? I know in your analog electronics playlist uses the Boylestad book and it really helped me follow through the lesson. It would be highly appreciated if you provide the textbook for this lecture. Thank you

@kaminarinokogo6206 4 года назад

Idk if it helps now but you can use this book called 'SIGNALS AND SYSTEMS' by A.Anand Kumar. Cheers!

@bahuldevdev4082 3 года назад

On what basis did u take t=1 for the 2nd graph sir??

@pranavkrishna3048 Год назад

exactly same doubt i too have

@ayushsinghrawat1409 Год назад

By dividing it with (alfa=2)

@abinessg6895 6 лет назад

How this set declarations are made at 7:03

@gustavoadolfosilvaquibano6350 6 лет назад

Thank you

@kinzaqureshi2558 5 лет назад

Brilliant

@pemakuenchap3082 10 месяцев назад

Loved it!!!!

@thawedmind 4 года назад

Case 2, I don't understand. why have you multiplied by 0.5 and then divided by 0.5 this is the same as multiplying or dividing by 1. why not just multiply by 0.5 and get the 4 initially? Is it something that will become more relevant when things get complicated and you have to isolate t before you can divide by it alpha?

@----700 6 лет назад

In the example for |a|>1 you have assumed x(t)=0 for t not in interval [0,2]. When you explain about x(2t) you have made function value 0 after t=1 while it has to be 0 after t=2. What you have told can happen only when x(t) is original signal. Please do make it clear.

@nickthewinner2194 4 года назад

Its good to have straight A's.

@mahidharvarma1533 3 года назад

What about signals like x (2t-1)

@cuongvcs_oanmanh6564 5 лет назад

Thank you so much about the lesson

@reshmaslukose6424 5 лет назад

Thanks...super

@mohiteharsha8009 3 месяца назад

It will be far better if you teached us why we do time scaling

@nikhildakwale412 Год назад

4:27 why were you trying to find x(2) at time=1?

@pharrell6052 3 года назад

in the first case you multiplied 2*0 how come you got 2 instead of 0?

@showmitasaha5257 7 лет назад

In case 1,why did you take only till t=1 in the terms of the x(2t), why not till t=2?As the range of t was from 0 to 2.

@RahmaElsaeed-cf6ru 6 лет назад

divide domain in original ex. by alpa as he said , when you divide 0/2 you get 0 and when divide 2/2 you get 1 ...this the method as he said , note : we make time scaling so time should be changed .

@trinadhabelagam523 4 года назад

I have a doubt in case 2 that y don't u multiply 2 nd 0 with alpha i.e 0.5 as u wrote the formula as alpha multiplied with t nd whole div by alpha

@romulosendoromulo 4 года назад

thx man

@DIWAKARUPADHYAY-yd9bx 5 месяцев назад

in the second case how have you taken the value of alpha to be 0.5?

@alimeersoomrox Год назад

Did somebody noticed that the ∪ in α ∈ (-∞,-1)∪(1,∞) kept changing to ∩ again and again throughout the video, why is this happening? can somebody explain?

@safayetislam2792 7 лет назад

In case-I you showed us what will be the graph if we take the value for t=0 and t=1. But the value of t=2 also. Then what will be the graph if we take the value for t=2?

@EmManuel-xw4xp 7 лет назад

Safayet Islam for t=2 x(2.t)=x(2.2)=x(4)=0 and similarly amp. of x(2t)=0 for all t1

@kaustubh3230 5 лет назад

@@EmManuel-xw4xp thank you brother. 💯

@nitinkumar-rz8dz 6 лет назад

is it sufficient for gate ee

@manassharma2928 4 года назад

sir expansion wale main apne aplha*t/alpha likha hai. phir sir apne 0.5/0.5 yeah kha se aaya.sir yeah topic thorda dubara karwado bahut se doubt hai.

@prudhviraj993 4 года назад

sir i didn't understand second one and range of alpha is not clear

@_joshua_9347 Год назад

how do you find alfa ?

@Rohit-tz6gs 7 лет назад

in the case I ,signal is defined at x=0 and x =2 but in the case 2 , signal is defined at x=0 but how it is defined at x =1 rather than at x=2. on wat basis x=1..

@jashvaru5093 6 лет назад

Rohit Kumar yes i am also so much confused

@danishkumar3338 7 лет назад

which book you use in this video

@elackiyasakthivel2002 3 года назад

Can someone explain me on what basis we select the alpha value?

@amarjeetbhatia6508 3 года назад

He's taking random values, according to the two cases obviously

@myonlynick 6 лет назад

does anyone know what is the book's name or author of the book that the video is saying towards the end of the video? video+book in front of me would be the ideal combination :)

@dharmeshparmani8473 5 лет назад

Book Name - Signals and Systems Author Name - Aanand Kumar 3rd Edition

@prakashsharma789 Месяц назад

How to get the notes any one tell me??

@deadheart8447 5 лет назад

case i: [alpha]>=1 ?? or is there right?

@muhammadmaarouf9560 4 года назад

if alpha equal to one .. this won't be any time scaling

@kyuuaditya 2 месяца назад

21 hours before my endsem exam I'll complete the playlist today before that

@aaronsandlin6277 6 дней назад

How did you do? :)

@kyuuaditya 6 дней назад

@@aaronsandlin6277 I did complete it. Still got c+.

@aselim20. Год назад

I watched it..

@sauravsikarwar3153 7 лет назад

How to find alpha can you please tell me

@EmManuel-xw4xp 7 лет назад

Saurav Sikarwar the no. which is scaled to time t is alpha itself except no.0 and |alpha|>1 for compression of time signals and |alpha|

@harishussain764 5 лет назад

union sign to intersection and again to union ......hmmm

@achuthramireddy2156 7 лет назад

I did not understand the second case

@averagecitizen91 3 года назад

I think its wrong

@rajareddy7649 6 лет назад

Did nt understand the second case

@Sudharshan9834 2 года назад

Alfha is assuming air

@Aabara_ka_dabara 3 года назад

if alpha is less than 1, we cant take values like -2,-3 etc

@vintibhatia5365 3 года назад

it is mod of alpha

@riteshpatil4711 4 года назад

No compression sir.... U hav just taken till 1......after scaling

@galaxy.5398 2 года назад

Speed thoda kam रखो definition ke sath vedio laya kro.

@ronakprj712 2 года назад

in case2 (-1 to 0) U (0 to 1) aayega

@devanshrana4564 4 года назад

why do we need time scaling in real world?

@srinivasam8051 5 лет назад

How that |α|>1 can be written as α€(-infinity, -1)u(1, infinity)

@srilakshmil3944 4 года назад

Mod Alfa is greater than zero only when alfa is not equal to zero right...for the union of two given sets gives all values expect zero for alfa... Then both are same right...

@shubhamdiwakar863 5 лет назад

Sir alpha 2 kg Liya hai

@poppyflorist 3 года назад

Why is he dividing by alpha? Not clearly understood Also, in example two, if alpha is not equal to zero, how does it belong in (-1,0) U (0,1)??? doesn't make sense