COW Tutorials: After Effects Creating an Oscillating Wave Form: Part 2

[Dorel Iordache]

Thanks for the great tutorials Aharon!

Not having Trapcode Sound Keys myself, I set out to write a script for smoothing the audio amplitude keyframes data. I

[Justin Productions]

Wow!

I must say Aharon, that Two parts tutorial rocked! Seriously, I really mean it. I’m sure this will be useful one day.

Glad you found the way to do those waves on your own, althought I remember seeing you post a thread on how to do oscillating wave forms 🙂

Really, that was awesome!

Way to go!

Five thumbs up.

Justin Productions
Tangerin01@hotmail.com
Adobe After Effects 6.5 Professional

[Aharon Rabinowitz]

I posted it, and then that night I didn’t sleep too well. I figured it out in the early AM, and later that day Mike Clasby emailed me with the same solution I came up with myself. He wrote:

Stroke on a 2 point mask, then Wave Warp with Wave Height pickwhipped to Audio Keyframes (_expression adjusted with *5 to give it more height on my test), adjust Wave width to taste. It’s not perfect (multiple wave look at times) but may work.

So while I figured it out, if I hadn’t, someone at the cow would have been there for me – which is what I love about this place.

—————————————-
Aharon Rabinowitz
aharon(AT)yahoo(DOT)com
http://www.allbetsareoff.com
—————————————-
Creative Cow Master Series DVD
particleIllusion Fusion Volume 1
available @ http://www.pIllusionFusion.com

[Ryan Hill]

Averaging the key frames makes it feel unresponsive. I think it’s best if it responds quickly to increases in volume and more slowly to decreases, while averaging treats both equally.

Here’s an expression I used to create a drop-off effect:

samples = 10;
framerate = 29.97;
droprate = 1/samples;

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

dropoffed=audioamp;
for (counter=1;counter

[Dorel Iordache]

Actually only one of the methods computes a straight average. Even the straight moving average could be useful sometimes, depends on the responsiveness you

[Ryan Hill]

Yes, I forgot to be careful posting a < sign, the line was supposed to go:
for (counter=1;counter<samples;counter++)

Whether the shape of your weight was bell-shaped or whatever wasn’t what bothered me. I was more concerned with symmetry, in terms of increases in volume versus decreases. I feel this should favour fast increases and slow decreases. Does that makes sense? Maybe it’s just my preference.

[Dorel Iordache]

Well, that