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Signal sampled at 5000 samples/s

  1. Nov 15, 2008 #1
    ok i will post in here
    I have a signal sampled at 5000 samples/s and I need to find the real values of the first 4 samples starting at t=0..
    the signal is:

    V=10 sin(8500t)
    i do not understand the question..what shall i do?
     
  2. jcsd
  3. Nov 15, 2008 #2

    Redbelly98

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    Re: signal

    If there are 5000 samples in 1 second, how much time elapses in between samples?
     
  4. Nov 15, 2008 #3
    Re: signal

    1/5000
     
  5. Nov 15, 2008 #4

    Redbelly98

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    Re: signal

    Okay, yes.

    The first sample is at t=0.
    Based on your answer of 1/5000, what is t for the next sample after that?

    What is the signal at those values of t?
     
  6. Nov 15, 2008 #5
    Re: signal

    t is 2(1/5000) at t=1?
     
  7. Nov 15, 2008 #6

    Redbelly98

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    Re: signal

    No.

    You get the first sample at t=0.
    Then 1/5000 of time goes by, and it's time to get sample #2. What time is it? I.e., t=_____?
     
  8. Nov 15, 2008 #7
    Re: signal

    t=1?
     
  9. Nov 15, 2008 #8

    Redbelly98

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    Re: signal

    No, t=1 when 1 second has gone by.
     
  10. Nov 15, 2008 #9

    Redbelly98

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    Re: signal

    Oh, I'm going to go offline soon, so you'll be on your own for a while.
     
  11. Nov 15, 2008 #10
    Re: signal

    i am lost..could you please resume..at t=0 we have 1/5000?
     
  12. Nov 15, 2008 #11
    Re: signal

    If you split 10 seconds into 10 different equal time slices, what is "t" at the beginning of each time slice, if "t" is in seconds?

    Hint: t=0 is the start of the first time slice....what would t be for the start of the 2nd, 3rd, etc....
     
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