The SoundMixer class that comes with computeSpectrum method are some of the new features of Actionscript 3.0, enabling the developers to produce real-time sound spectrum. Some people made real good effects the kind of windows media player. Let’s take a look for the bellow tutorials and source files:
Antti Kupila posted some of the most spectacular spectrum effects with source files. For sure will be a nice help and inspiration for your work.