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EDIT: I have some newer, better webcam audio visualizers and some utility patches available now. Click Here: http://sintixerr.wordpress.com/quartz-composer-downloads/
For all of you who have asked for this, I’ve made my Artomatic Quartz Composer based webcam audio visualizer available as a free download.(Keep in mind, this is only for Mac OS X users – Quartz isn’t portable).
You can download it here: http://jackwhitsitt.com/Artomatic09-final-whitsitt.zip
(Im calling it “WAVIQ” for short…Webcam Audio Visualizer In Quartz”…since it needs some sort of a name and I dont feel that creative about it.)
A quick overview:
The composition has two inputs – the webcam and an audio source. If you have a built in webcam, it will default to that. Likewise, if you have a built in mic (most laptops do), the composition will default to using that as your audio source. You can change these by going into the patch inspector for the Video and Audio patches and selecting “settings”. (In the case of the audi, double-click the macro patch “Audio Source” and then click on “Audio Input” to get there).
The only other settings you’ll be interested in are the Increasing Scale and Decreasing Scale parameters found in the Audio Input patch. These affect how fast the values for movement, color, etc. get bigger and how fast they get smaller. This will affect how the composition responds to different music. Also, keep in mind that in the audio settings of OS X itself, you can change the mic sensitivity. This will affect how the composition responds as well.
You can also find a basic tutorial to get you started on tweaking this in the links below.
Thats it. Drop me a line with any questions and have fun with it. If you do end up using it, I’d love to hear about it.
- Tutorial I wrote explaining the basics of how this works:
- Stop-Motion Video Example of how I’m using it at Artomatic:
- Screen-shots of my Artomatic Art Installation: