Activity › Forums › Adobe After Effects › guitar strings to sound fille
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guitar strings to sound fille
Posted by Kristin Genovese on July 6, 2007 at 1:28 pmhey there… i’ve set up six strings to animate on a guitar, as if someone was strumming it. now is there a way to link this animation to a sound file, so it appears the guitar is being played to a particular piece of music? (i’m thinking all strings could be “strummed” at once… it wouldn’t need to be the individual strings being “picked.”) upfront disclaimer: i’m not so advanced with expressions!
thanks for any and all help!
kristin
Aharon Rabinowitz replied 18 years, 10 months ago 4 Members · 6 Replies -
6 Replies
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Jeremy Sexton
July 6, 2007 at 1:37 pmTrapcode’s Sound Keys plugin sounds like it would do the trick if you have the budget for it.
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David Franklin
July 6, 2007 at 3:03 pmIf you don’t have the budget for soundkeys, the principles explained in the following two tutorials should do the trick:
https://library.creativecow.net/articles/rabinowitz_aharon/waveform_1.php
https://library.creativecow.net/articles/rabinowitz_aharon/waveform_2.php
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Kristin Genovese
July 6, 2007 at 3:59 pmI had actually read those 2 tutorials (and unfortunately i don’t think we’re going to spring for sound keys at the moment). my biggest problem lies in understanding how to apply that expression in the tutorial to my project. i was planning to convert audio file to keyframes… but then Aharon uses an expression on wave form height (from the wave warp filter) in his tutorial and drags the pickwhip to the audio channels. my strings are animated with an expression on bezier warp… can i just apply that expression to the audio amp channels maybe?
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David Franklin
July 6, 2007 at 5:06 pmI don’t think you need to do that.
In Aharon’s tutorial he uses the keyframe information from the audio amplitude layer to directly change the wave height of his animated stroke. In other words, the stroke is already moving, then he ADDS additional movement based on the sound info. In this case, wave height.
Since you’ve already used an expression to animate your strings, you can also use the sound amplitude sliders to ADD movement. Perhaps animate the x or y scale of your strings, or the amount of blur. It doesn’t really matter what, as long as it’s dancing in time to the music.
Plus, this way, you get to keep whatever cool movement you’ve already come up with.
Try using the pickwhip to set up a relationship between the x scale of your string and the slider value of one of your audio amplitude sliders. (Remember to plug in values of 100 and 100 for the y and z parts of the expression.) If you don’t like this, try linking to a different property.
One other thing to keep in mind is that you may need to modify the resulting expression info by using a constant or multiplyer to get the slider info to produce values around 100. It depends on how loud your sound is, and how large the strings are, and what you want the effect to look like.
There’s also the chance that someone with more AE mojo than me can weigh in and give additional guidance?
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Kristin Genovese
July 6, 2007 at 6:07 pmthanks for the suggestion! adjusting the scale in relation to the audio amp slider actually worked pretty well. i’ll keep tweaking…
kristin
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Aharon Rabinowitz
July 6, 2007 at 8:37 pmHey there-
I wouldn’t mind seeing th final result, if you can post it at some point.
Thanks.
Aharon
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Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com—————————————-
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