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

[Louis Ferrante]

I viewed this yesterday came back to it today and cant view it? and its not me i tested with several proxies. I really want to view the video again I made this write on comp but i want it to oscillate instead of write on so I was wondering if it was possible for me to take this and keyframe its brush positions and then oscillate them…

This is the preview of what im talking about its like an eeg or a cardiogram display. I used “write-on” to create the original effect write on key-framing the brush positions. Now my ? was can i use warp to create the same effect hes creating her with the same oscillating effect yet with different lines?