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payman1-Visitor
1-Visitor
May 10, 2017
Solved

square wave train

  • May 10, 2017
  • 3 replies
  • 6017 views

Hello,

I want to create a square wave train with 40 kHz frequency. The problem with the attached worksheet is

1- it doesn't start from zero amplitude

2- I don't know how to add the factor (x-vt) , x= position and v=the sound speed, to simulate the wave train propagation in "x" direction.

Could you please give me some hints.

All the best

Payman

Best answer by -MFra-

Square wave.jpg

Example of voltage step propagation, along a line, in space and time:

wave propagation.jpg

3 replies

F
Fred_Kohlhepp23-Emerald I
23-Emerald I
May 10, 2017

Maybe a place to start

    -
    -MFra-21-Topaz IIAnswer
    21-Topaz II
    May 10, 2017

    Square wave.jpg

    Example of voltage step propagation, along a line, in space and time:

    wave propagation.jpg

      F
      Fred_Kohlhepp23-Emerald I
      23-Emerald I
      May 11, 2017

      Fixed to start at zero

        P
        payman1-VisitorAuthor
        1-Visitor
        May 15, 2017

        thank you, the worksheet generates an infinite train , how can I truncate it to 10 periods ?

        L
        LucMeekes23-Emerald IV
        23-Emerald IV
        May 15, 2017

        This should do it, for any frequency Fs, amplitude A, duty-cycle d and number of periods p:

        Success!
        Luc

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