A few months ago I started out with Actionscript 3, the programming language to develop on the Adobe Flash Player platform. At the time I wanted to get a “bar spectrum visualization” to show in the browser, like on a real stereo system. I found out Adobe had introduced a new class called SoundMixer in the Flash Player 9 release. This was just what I needed as it gives you the possibility to retrieve the frequencies of music playing in the Flash Player.

I already had a great music player, the JW player from Longtail Video, so the obvious move was to create a plugin and get the sound visualization on the screen of the JW player. Looking on the internet for similar projects I stumbled upon the blog of Bartek Drozdz, he had made a equalizer class in AS3 and posted the source code on his website free to use. This is the result I ended up with. Everybody can get it free of charge at Longtail Video's addons section.

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A demo page with different configurations can be found in the Labs: Compute Spectrum Visualizer