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Forums Adobe After Effects Expressions question

  • Expressions question

  • Adolfo Rozenfeld

    June 30, 2005 at 5:32 am

    Hi all!
    I am working on a text animation that simulates a dot matrix printer working.
    Basically, I applied the Convert Audio to Keyframes Assistant to an audio file of a dot matrix printer.
    I then want the values of the audio amplitude to be substracted from the text current position, so that the viewer gets the impression that the text being printed and the printer audio are the same thing.
    However, since AE Expressions variables have no “memory”, the text obviously returns to the original position after being affected by an oscillation in the volume.
    What I would need is the substraction to be acumulative, ie, that each peak in the audio makes the object move from the last point it was in, instead of going back to the original position value.
    I hope it’s clear!
    Any advice please?

    Adolfo Rozenfeld
    Buenos Aires – Argentina

  • Mylenium

    June 30, 2005 at 7:08 am

    You need to write a loop. Something like:

    while(time < 20) {for (i=0,i <= numberOfBeats, i++) {} } Don't have time to figure out the specifics, but you should find something usable for reference here at the COW. Mylenium [Pour Myl

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