Signal Construction Example #2
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We often deal with "simple" signals in a signals-and-systems course that can be easily described as a linear combination of time-shifted unit step and unit ramp functions.
Just as in the previous video, we again are provided a sketch of a "simple" signal x(t) and we develop an equation for x(t) in terms of time-shifted unit step and unit ramp functions.
Пікірлер: 54
As an EE student, Thank YOU!
@josefsamik3859
6 жыл бұрын
yes you are an ass
@eehub6710
4 жыл бұрын
😂🤣
thank you so much!!! just 1 video and it's worth than my lecture at university. This is what I'm trying to understand for days!!!
@AdamPanagos
3 жыл бұрын
Glad I could help, thanks for watching. Make sure to check out my website adampanagos.org for additional content (600+ videos) you might find helpful. Thanks, Adam
Explained beautifully... helpful indeed...Thanks!
I'm watching this for the sake of online class during the pandemic. Thanks!
@AdamPanagos
3 жыл бұрын
Glad I could help, thanks for watching. Make sure to check out my website adampanagos.org for additional content (540+ videos) you might find helpful. Thanks, Adam
You have made this really simple. Thank you!
@AdamPanagos
3 жыл бұрын
Glad I could help, thanks for watching. Make sure to check out my website adampanagos.org for additional content (540+ videos) you might find helpful. Thanks, Adam
A big thanks for making everything clear!
@AdamPanagos
Жыл бұрын
I’m glad you enjoyed the video! Make sure to check out my website adampanagos.org for additional content (600+ videos) you might find helpful. Thanks, Adam
Thank you! Very concise and informative.
@AdamPanagos
3 жыл бұрын
You're very welcome, thanks for watching. Make sure to check out my website adampanagos.org for additional content (600+ videos) you might find helpful. Thanks, Adam.
اتمنى ان تستمر بشرح هاذه الماده ❤️
How to construct this signal sir x(t)=tu(t)-2(t-2)u(t-2)+2(t-4)u(t-4) i have confusion in it.
how can we get -1 slope
Thank you it really helped !!💯🙏
@AdamPanagos
4 жыл бұрын
Glad I could help, thanks for watching. Adam
great video thank you
@AdamPanagos
2 жыл бұрын
Glad I could help, thanks for watching. Make sure to check out my website adampanagos.org for additional content (600+ videos) you might find helpful. Thanks, Adam
please add some more problems on signal construction to clear the concept....this was awesome...but still needs to watch some more to get into d concept...plz
@ladybuggaming25
5 жыл бұрын
x(t) =(3t+1) (u(t +2)+u(t-2)) can you in this question?
great, THANKS!
Oh god, the train. I'm getting fred Harris war flashbacks.
Very useful!
@AdamPanagos
4 жыл бұрын
Thanks for the kind words, I’m glad you enjoyed the video! Make sure to check out my website adampanagos.org for additional content (400+ videos) you might find helpful. Thanks much, Adam
Sir, how you consider 1 at u(2) , because according to your previous video it should be 2 yup.
@AdamPanagos
5 жыл бұрын
No, I'm pretty sure the videos are correct. Can you tell me what time in the video you think there's an error? u(t) is the unit step function and is equal to 1 for all t >=0 and zero otherwise So, u(2) = 1. r(t) is the unit ramp function and is equal to r(t) =tu(t). So, r(t) is equal to t for all t>=0 and zero otherwise. So r(2) = 2*u(2) = 2*1 = 2. Did you maybe mix up the r(t) and u(t)?
Say we have a positive ramp function with slope = 1 starting at t=0, then at t=1 the signal falls and commences as a horizontal line from t=1 to t=2. How would you write this when there's two things that happen at t=1?( adding a positive slope to make it horizontal then subtracting a step function??)
@AdamPanagos
3 жыл бұрын
Yes, what you said sounds perfectly right. If "two things" happen at the same time, just put two signals at that time. You could put a unit step to shift things, and a ramp to change the slope. Hope that helps, Adam
Thanks a lot man!!
@AdamPanagos
3 жыл бұрын
You're very welcome, thanks for watching. Make sure to check out my website adampanagos.org for additional content (600+ videos) you might find helpful. Thanks, Adam.
Don't you have to create a ramp function that cancels the first where the value is held from -1?
@AdamPanagos
7 жыл бұрын
That's what the final ramp term r(t-2) does. If the last term was not present, we would continue to decrease with a slope of -1 for all time. Adding in r(t-2) adds a slope of +1 at time t = 2 to cancel it out. So, the final slope at t = 2 is -1+1 = 0. Thus, we hold a constant value for the rest of time. This constant value happens to be zero. Hope that helps.
thank you !!
@AdamPanagos
4 жыл бұрын
You're very welcome, thanks for watching. Make sure to check out my website adampanagos.org for additional content (435+ videos) you might find helpful. Thanks, Adam.
you said that the ramp function is equal to 0 if t is less than or equal to 0! Is that true? I checked it online and my professor told us that the ramp function is equal to 0 only if t is less than 0. if ramp of 0 is t then the x(t) won't be equal to 1 at t-1.
@AdamPanagos
6 жыл бұрын
Either definition is the same. You can define it as: r(t) = t for t>=0 and 0 for t Or you can define it as: r(t) = t for t>0 and 0 for t
what is u(-t) if u(t)=1 for t>=0?
@AdamPanagos
5 жыл бұрын
It's just the time-reversed version of u(t). The signal u(-t) is equal to 1 for all t
x(t) =(3t+1) (u(t +2)+u(t-2)) how to solve this question? What to do with 3t+1 part?
@AdamPanagos
5 жыл бұрын
I'm not sure exactly what you're asking. Are you trying to plot this signal?
@ladybuggaming25
5 жыл бұрын
@@AdamPanagos yeah.. But i did it myself. Thanks ^^
Very helpful , Thanks a lot man
@AdamPanagos
5 жыл бұрын
You’re welcome, thanks for watching. If you found the video useful make sure to check out my website adampanagos.org where I have a variety of other resources available that you might find helpful. Thanks, Adam.
Didn’t understand the checking part. How is u(5) =1?
@AdamPanagos
Жыл бұрын
u(t) is the unit step function. It's "on" for all t >=0 and "off" for all t 0 and thus it's on. Hope that helps, Adam
confused how the last one is r(t-2) isn't that 0*r(t-2)
@AdamPanagos
4 жыл бұрын
During times 1 Adam
r(0) is equal to 0
thank you so much sir ..but i have badly in need the matlab code of this singal.. please sent the code as soon as possible..
@AdamPanagos
5 жыл бұрын
I'm sorry, but this video example doesn't have anything to do with Matlab so there's not any Matlab code to go along with it.
@mahmudulhasan672
5 жыл бұрын
@@AdamPanagos my lab examination is knocking at the door.I need matlab code like that problem... Can you make me a solution, where I get this code??