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Linking Opacity to Audio On/Off
Hey guys …
I´ve searched the forum, but didn´t got the combination right yet. What I want to achive is that layer opacity reacts to audio beats. So if there is beat I want the layer to appear and then fade out at a controlable rate.
cheers and thanks for any help
Christian
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1 Reply
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Something like this maybe:
threshold = 10.0;
decay = 4.0;audioLev = thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”);
above = false;
frame = Math.round(time / thisComp.frameDuration);
while (true){
t = frame * thisComp.frameDuration;
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 = time – frame * thisComp.frameDuration;
}value/ Math.exp(decay * t)
Dan
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