new random value every time

[Dan Ebberts]

You need an audio level threshold detector, as described here:

https://www.motionscript.com/design-guide/audio-trigger.html

Just use “t” as your seed.

Dan

[Micheel Leavitt]

Hehe, I tried to make sense of your code, but I’m lost. I changed the variable “t” to a random number and a random color array and I finally got AE to accept what I was trying to make, but it was a fail, it just gives one random color. Here is what I got:

threshold = 10.0;

audioLev = thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”);

above = false;
frame = Math.round(time / thisComp.frameDuration);
while (true){
t = random();//edited
if (above){
if (audioLev.valueAtTime(t) < threshold){ frame++; break; } }else if (audioLev.valueAtTime(t) >= threshold){
above = true;
}
if (frame == 0){
break;
}
frame–
}
if (! above){
t = 0;
}else{
t = random();//edited
}
seedRandom(t,true)
random([0,0,0,1],[1,1,1,1])//this final output when channel hits 10?

I see it works perfectly the way it is for scaling, which totally rocks, but I’m at a loss since it seems pretty condensed, and I don’t really know programming too well. If you have an idea as to how to chop it up a bit to allow it to call colors, sweet, if it won’t work ah well, didn’t realize it would be that complex. Thanks for the help tho!

[Dan Ebberts]

Sorry, I think I pointed you to the wrong example. Try this:

threshold = 10.0;

audioLev = thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”);

above = false;
frame = Math.round(time / thisComp.frameDuration);
n = 0;
while (frame >= 0){
t = frame * thisComp.frameDuration;
if (above){
if (audioLev.valueAtTime(t) < threshold){ above = false; } }else if (audioLev.valueAtTime(t) >= threshold){
above = true;
n++;
}
frame–
}

seedRandom(n,true)
random([0,0,0,1],[1,1,1,1])

Dan

[Micheel Leavitt]

Ah, guess I should have done a little more exploring, I would have found it. Thank you so much, this works astoundingly.