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Use Generated Waveform as Path

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Andy Benham
Use Generated Waveform as Path
on Oct 11, 2018 at 12:18:03 pm
Last Edited By Andy Benham on Oct 11, 2018 at 12:18:22 pm

Hello all,

I'm using the AE waveform generator (playing in a 'white noise' file) for some technical videos I'm making to demonstrate a waveform.

Can I use this generated waveform as path for a cursor to follow, I want a 'dot' to ride along on this generated wave much like a traditional cathode-ray 'scope, whilst still displaying the wave.

Any pointers how I can do this, I've placed the wave-form on to a solid?

Kind Regards,

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Kalleheikki Kannisto
Re: Use Generated Waveform as Path
on Oct 11, 2018 at 2:00:54 pm

For a simple solution you could try making a copy of the waveform and then animate a vectical slit to move across the screen and use it as a track matte for the copy, essentially slicing a little section of the waveform to generate the "point". It may look just fine for your purposes.

Kalleheikki Kannisto
Senior Graphic Designer

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Michael Szalapski
Re: Use Generated Waveform as Path
on Oct 12, 2018 at 3:40:31 pm

I like this idea! A couple of linear wipes (offset from one another with an expression for ease of use) would get you a tiny slice. You could then apply blurs and/or glow effects to make a little dot traveling along the line.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

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