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I Units of Amplitude

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  1. Dec 1, 2016 #1
    for (int n = 0; n < 52920; n++){
    F = Amplitude * sin(2 *pi*n* Frequency/44100) ;
    }
    what are the units of Amplitude ?
    I know Frequency is in Hz
    also what are the unit of F?
     
  2. jcsd
  3. Dec 1, 2016 #2

    anorlunda

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    It appears to be an expression for the instantaneous values of something which varies sinusoisally. But without know what that thing is, we can't tell the units.

    It could be a swing. It could be electrical current, or voltage or power. It could be the height of a liquid. It could be almost anything.
     
  4. Dec 1, 2016 #3

    jtbell

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    The sine doesn't have units, so F and Amplitude have the same units. But what those units are, depends on what physical quantity you're describing, as anorlunda said.
     
  5. Dec 1, 2016 #4
    what if it is a sound wave?
     
  6. Dec 1, 2016 #5

    anorlunda

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    That's still not enough. You're not going to get anywhere asking people to guess.

    Does the signal come from a microphone or a pressure sensor? Information like that will provide your answer.
     
  7. Dec 1, 2016 #6
    so that signal I posted, is just a sinewave I make up. I did not get it from anywhere...
     
  8. Dec 2, 2016 #7

    sophiecentaur

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    So there is no answer to your question. :smile:
     
  9. Dec 3, 2016 #8

    A.T.

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    Then you can make up the units as well.
     
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