lie detector

[Evrard Blom]

I would hand draw a stroke or a path using pencil tool in illustrator, mask it, and reveal it progressivly. I would time-warp it so its pace matches the dialogue or sound whatever.

[Mike Sullivan]

Thanks, but I forgot to mentionm I need to have the arms that draw out the lines too! That’s what I was hoping to link to something using expressions

[Evrard Blom]

There was some tutorial with aharon rabinowitz about hand-drawn signature with the pen following the strokes. Could help. Sorry i don’t remember the title nor the link

[Kathlyn Lindeboom]

[evrard] “tutorial with aharon rabinowitz about hand-drawn signature with the pen following the strokes”

https://www.creativecow.net/articles/rabinowitz_aharon/animating_signature2/index.html

Kathlyn Lindeboom
The Mistress of Mmmooooo!

[Justin Productions]

Maybe this could help: https://www.ayatoweb.com/ae_tips_e/ae08_e.html

Justin Productions
Tangerin01@hotmail.com
Adobe After Effects 6.5 Professional

[David Bogie]

Your challenge will be in satisfying the need for reality. Lie detectors use a swinging arm that traces arcs. Most other medical equipment uses a linear trace. This is one of the things that distinguish lie detectors from other similar doodads for a hip audience.

However, most current lie detector equipment uses a computer display. That’s easy to do. My favorite substitutes or adds Vegas to the list of filters mentioned in the various tutorials.

bogiesan

This is my standard sigfile so do not take it personally: “For crying out loud, read the freakin’ manual.”

[Brett Sanders]

What I would do is Have the audio, change it to keyframes. Link the Rotation of the writing arm to the Audio. You could use an Expression Aharon used.
Figuire out how much of an Angle the arm needs to be to fit on the scrolling piece of paper. Then have it relate to the amount of AUdio information like this:
Linear(x,0,100,0,30)
So it will fit the information of the audio from 0 to 100 into a space of 0 to 30 or whatever the rotation needs to be.

You could create a very long White solid. Import the audio into some sort of Audio editing utility like Sony Sound forge, Vegas, or even creative’s wave studio. Do maybe a few screen captures at a certain zoom level, splice the pictures together. Set it to Black and white, then import it place on the Solid. Have it animate horazontally. Then I’d do a Linear wipe and keyframe it so It stays faded til it goes under the needle. Then syncronise.

When I was typing Ideas started flying out of my Head. : / Hope it helps.