Berkeley CSUA MOTD:Entry 35945
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2025/05/25 [General] UID:1000 Activity:popular
5/25    

2005/1/28 [Computer/SW/Apps/Media] UID:35945 Activity:moderate
1/27    I really like the visualization feature of iTunes.  Is there an open
        source program that does something as nice?  Where can I learn about
        the algorithm/formula it uses?
        \_ There are quite a few open-source iTunes visualizations out
           there which you can d/l and analyze the source for. The basic
           idea is pretty simple -- iTunes feeds you a buffer of time domain
           and frequency domain data (downsampled, so you can't copy the
           song), which your plugin can use to do whatever. A cursory look
           at the output of the default visualizer looks like it just
           draws the waveform, perhaps constrained so a shape like a circle,
           and then uses low-pass filtered versions of previous data to
           generate the trippy melting backgrounds. It doesn't look like
           it uses the FFTs. You can run some test signals through the
           visualizer and see how it responds to get a better understand
           of what it is doing.
        \_ I'd love to be a Visualization Engineer! No backward compatibility
           issues to work on, and who's going to tell you that your
           visualization algorithm is wrong or inefficient?
2025/05/25 [General] UID:1000 Activity:popular
5/25    

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