The Audio Iris

rybotron's picture

Here's a new audio reactive comp I created. It's Quartz Composer with a large dose of Kineme GL Tools controlled by VDMX. Thanks!

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rybotron's picture
Re: The Audio Iris

The compression is a little tough on it. Please watch it in HD!

harrisonpault's picture
Re: The Audio Iris

Nice video recording. Can you explain a bit about the audio-reactivity? Are some of the lines based on the waveform? Did you do audio-analysis to get the pulse? Honestly, it looked very organic. Almost as though you were sitting at the VDMX control panel adjusting the sliders on Z scale or rotation. Curious on the technique.


rybotron's picture
Re: The Audio Iris

Thanks Paul! It is 4 GL line structures that has an LFO sine wave for the X and an LFO cosine for the Y. The Z is controlled by the audio which creates a circular waveform with z-depth. Those 4 structures are inside a render in image using an accumulator for the feedback.

The published inputs to VDMX are the XYZ position and X rotation of the 3D transform that contains the line structures, XYZ and Z rotation of the Feedback Sprite, LFO Period and Amplitude, Patch Time/BPM, and the length of the line structure.

Inside VDMX I have the 3D Z position controlled by a sine wave and the x-rotation controlled by a cosine wave to give it the pulse and a little smooth wiggle. While recording I was changing the time of the waves, the Z rotation of the feedback and feedback position. The length of the line structure is controlled by the audio peaks so the circle gets longer when the music is louder.

I attached a picture of what it looks like with no audio playing.

Screen Shot 2012-05-07 at 7.58.30 PM.PNG
Screen Shot 2012-05-07 at 7.58.30 PM.PNG45.64 KB

ccc404's picture
Re: The Audio Iris

very cool!! Can you share the QC patch? :)

cybero's picture
Re: The Audio Iris

nicely done