Two hours of watching your videos and I've absorbed more than 1 months worth of lectures. Your concise, measured way of explaining these concepts is absolutely fantastic.
thank you so much, this was a huge help! for those who get confused easily like me, remember this : [arrows (do not equal) the equal sign]. arrows show the flow of the signal from input to output. another thing to remember: here the input signal is a function of time x(t), so when we look at the output signal it is almost a function in two variables "implicitly" because we are modifying on x(t) as though it was another variable. just remember you're not just dealing with variable t in y(t), you are as well always dealing with x(t) because this is the function of a system; which is to modify a function and produce another function with the same variables. I hope I have dumbed this down in a good way, I wasn't taught a good foundation on functions when I was a little either so for all math nerds out there I apologize.
For everyone whos complaining that hes speaking too slow play this video at 1.25x speed, theres a fucntion on youtube that lets us do this :) Great videos, thanks for help
For anyone having a problem with the pace of the videos- you can watch videos at 1.5x and 2x the speed if you enter the youtube html5 trial (just click at the button you would usually use for setting the quality of the video). That's how I do it tee hee. 's awesome. Plus Darryl is unusually understandable at 2x. Most people aren't!
I have a question: For Continuous-Time Systems y(t) we can easily notice if they are time variant or not, by seeing if the gain is a function of time. How about Discrete-Time Systems y(n)? Is there a way to suspect Time Invariance without doing any math?
Thankyou very much. It was quite helpful. It would be more beneficial if you have a lighted pointer on the screen, so that the viewers can follow your cursor or pointer around as you write on the screen
Yes it is. You can conciser it as Y(t) = A(t)*x(t) where in your case A(t)=t. Hence, the system behavior (the coefficient' A) is dependent on time. In the case of A(t)=1. The system is time invariant (NOT time variant). Because A(t) will always be 1 regardless of time (systems age).
I can save you the trouble of asking whether a system is time invariant... no system is time invariant. Space-time bends and so time is variant, which means no system is time invariant.
Two hours of watching your videos and I've absorbed more than 1 months worth of lectures. Your concise, measured way of explaining these concepts is absolutely fantastic.
thank you so much, this was a huge help!
for those who get confused easily like me, remember this : [arrows (do not equal) the equal sign].
arrows show the flow of the signal from input to output.
another thing to remember: here the input signal is a function of time x(t), so when we look at the output signal it is almost a function in two variables "implicitly" because we are modifying on x(t) as though it was another variable. just remember you're not just dealing with variable t in y(t), you are as well always dealing with x(t) because this is the function of a system; which is to modify a function and produce another function with the same variables.
I hope I have dumbed this down in a good way, I wasn't taught a good foundation on functions when I was a little either so for all math nerds out there I apologize.
For everyone whos complaining that hes speaking too slow play this video at 1.25x speed, theres a fucntion on youtube that lets us do this :) Great videos, thanks for help
+TomasPublic still too slow, you need 2x speed
Still way too slow, you can download the video and play it with the VLC player. It allows you to play the video 4x speed
I need more that 2x, but nice lectures.
An excellent follow-up to the previous video to formalise the concept. Thank you!
i lost the class and i couldnt understand this from the notes. after so long research on youtube, at last i found the right video!
For anyone having a problem with the pace of the videos- you can watch videos at 1.5x and 2x the speed if you enter the youtube html5 trial (just click at the button you would usually use for setting the quality of the video). That's how I do it tee hee. 's awesome. Plus Darryl is unusually understandable at 2x. Most people aren't!
Thank you for posting this informative and to-the-point video. It helped me a lot.
Thank you so much! I learned more from your video than two class sessions.
I have a question:
For Continuous-Time Systems y(t) we can easily notice if they are time variant or not, by seeing if the gain is a function of time.
How about Discrete-Time Systems y(n)?
Is there a way to suspect Time Invariance without doing any math?
Thankyou very much. It was quite helpful.
It would be more beneficial if you have a lighted pointer on the screen, so that the viewers can follow your cursor or pointer around as you write on the screen
it worked in the meow mix ads
Is it not easier to just differentiate the transformation w.r.t. t?
any one knows what is the program that he used for writing ??
You should read bedtime stories!
only video to make sense
great it helped me alot............
Bravo sir.
y(t)=x(t)cos2t Is the sytem LTI ???
lti has to be tiv and linear. this is not a tiv, so it it is not lti
THANKS ALOT
Is t*x(t) is time variant system.? Please reply...
Yes it is. You can conciser it as Y(t) = A(t)*x(t) where in your case A(t)=t.
Hence, the system behavior (the coefficient' A) is dependent on time.
In the case of A(t)=1. The system is time invariant (NOT time variant). Because A(t) will always be 1 regardless of time (systems age).
thank u !!
I can save you the trouble of asking whether a system is time invariant... no system is time invariant. Space-time bends and so time is variant, which means no system is time invariant.
awesome
please solve for y (n)=x (n+2)
you misspelled the number 4
speedup to 1.25 thanks
thanx......:)
Why are you so depressed?
And just when I thought I would never understand this concept...