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Turn on threshold with decay

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Jon Date
Turn on threshold with decay
on Jan 24, 2017 at 9:37:07 pm
Last Edited By Jon Date on Jan 24, 2017 at 9:51:04 pm

Hello,

I'm trying to write an expression where by, when a certain threshold is reached, opacity is set to 100%. That's the easy bit.
But what about if I want this sudden turn on of the light to then decay over time but still listen out for the threshold value, which would turn it instantly back up too 100%?

*Edit*
I Found what I needed on Dan's amazing site :
http://www.motionscript.com/design-guide/audio-trigger.html


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