Describing a discrete time LTI system by difference equation and impulse response Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)LTI: How to derive the impulse response of this system?Find the expression and the system impulse responseLTI system response questionMatlab: Impulse response of linear time invariable (LTI) sine-signalSolving a non-linear parametric equationLTI system with sinc input and unit impulse output?LTI system difference equation with inputFind discrete transfer function from impulse response?Determining LTI System response with Fourier TransformCalculate impulse response for given system

Why was the term "discrete" used in discrete logarithm?

Why is "Consequences inflicted." not a sentence?

How to assign captions for two tables in LaTeX?

What is the longest distance a 13th-level monk can jump while attacking on the same turn?

"Seemed to had" is it correct?

3 doors, three guards, one stone

Why don't the Weasley twins use magic outside of school if the Trace can only find the location of spells cast?

List *all* the tuples!

Does surprise arrest existing movement?

Should I discuss the type of campaign with my players?

What are 'alternative tunings' of a guitar and why would you use them? Doesn't it make it more difficult to play?

I am not a queen, who am I?

Withdrew £2800, but only £2000 shows as withdrawn on online banking; what are my obligations?

Is there a service that would inform me whenever a new direct route is scheduled from a given airport?

How can I fade player when goes inside or outside of the area?

Disable hyphenation for an entire paragraph

What happens to sewage if there is no river near by?

What is a Meta algorithm?

Gastric acid as a weapon

What does “buco del culo” mean here?

Doubts about chords

What do you call a plan that's an alternative plan in case your initial plan fails?

Did Xerox really develop the first LAN?

Does accepting a pardon have any bearing on trying that person for the same crime in a sovereign jurisdiction?



Describing a discrete time LTI system by difference equation and impulse response



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)LTI: How to derive the impulse response of this system?Find the expression and the system impulse responseLTI system response questionMatlab: Impulse response of linear time invariable (LTI) sine-signalSolving a non-linear parametric equationLTI system with sinc input and unit impulse output?LTI system difference equation with inputFind discrete transfer function from impulse response?Determining LTI System response with Fourier TransformCalculate impulse response for given system










0












$begingroup$


Consider a system where the output is a discounted summation of all previous inputs, which can be described by one of the following two input-output relationships;



  1. $y[n]=a y[n-1]+x[n]$

  2. $y[n]=sum_k=0^inftya^k x[n-k]$

It seems the first equation requires an initial condition to be evaluated, whereas the second equation does not. Do those two equations describe the same system? If so why does it require an initial condition additionally?










share|cite|improve this question









$endgroup$
















    0












    $begingroup$


    Consider a system where the output is a discounted summation of all previous inputs, which can be described by one of the following two input-output relationships;



    1. $y[n]=a y[n-1]+x[n]$

    2. $y[n]=sum_k=0^inftya^k x[n-k]$

    It seems the first equation requires an initial condition to be evaluated, whereas the second equation does not. Do those two equations describe the same system? If so why does it require an initial condition additionally?










    share|cite|improve this question









    $endgroup$














      0












      0








      0





      $begingroup$


      Consider a system where the output is a discounted summation of all previous inputs, which can be described by one of the following two input-output relationships;



      1. $y[n]=a y[n-1]+x[n]$

      2. $y[n]=sum_k=0^inftya^k x[n-k]$

      It seems the first equation requires an initial condition to be evaluated, whereas the second equation does not. Do those two equations describe the same system? If so why does it require an initial condition additionally?










      share|cite|improve this question









      $endgroup$




      Consider a system where the output is a discounted summation of all previous inputs, which can be described by one of the following two input-output relationships;



      1. $y[n]=a y[n-1]+x[n]$

      2. $y[n]=sum_k=0^inftya^k x[n-k]$

      It seems the first equation requires an initial condition to be evaluated, whereas the second equation does not. Do those two equations describe the same system? If so why does it require an initial condition additionally?







      signal-processing






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Mar 26 at 7:22









      user319511user319511

      262




      262




















          0






          active

          oldest

          votes












          Your Answer








          StackExchange.ready(function()
          var channelOptions =
          tags: "".split(" "),
          id: "69"
          ;
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function()
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled)
          StackExchange.using("snippets", function()
          createEditor();
          );

          else
          createEditor();

          );

          function createEditor()
          StackExchange.prepareEditor(
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader:
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          ,
          noCode: true, onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          );



          );













          draft saved

          draft discarded


















          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3162838%2fdescribing-a-discrete-time-lti-system-by-difference-equation-and-impulse-respons%23new-answer', 'question_page');

          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes















          draft saved

          draft discarded
















































          Thanks for contributing an answer to Mathematics Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid


          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.

          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3162838%2fdescribing-a-discrete-time-lti-system-by-difference-equation-and-impulse-respons%23new-answer', 'question_page');

          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Moe incest case Sentencing See also References Navigation menu"'Australian Josef Fritzl' fathered four children by daughter""Small town recoils in horror at 'Australian Fritzl' incest case""Victorian rape allegations echo Fritzl case - Just In (Australian Broadcasting Corporation)""Incest father jailed for 22 years""'Australian Fritzl' sentenced to 22 years in prison for abusing daughter for three decades""RSJ v The Queen"

          Who is our nearest planetary neighbor, on average?Santa Claus flies to the South PoleSeven Spheres of Unequal Mass, a weighing problem with a twistDescribe a large integerFast Mental Calculation of $7.5^7$Math in Space (without the help of celebrities)Find the value of $bigstar$: Puzzle 8 - InequalityWho drinks beer while running anyway?A Crucial DeliveryRanking And AverageHow long will my money last at roulette?

          Daza language Contents Vocabulary Phonology References External links Navigation menudaza1242Daza"Dazaga"eeee178086576