Marcin Zieliński writes:
I would like to present to you Karl Casey - Night Crawler music visualization made with Styriam Waveform addon (music is available under CC BY 3.0 license).
Styriam Waveform generates an easy to use widget-like object made with curves, drivers, constraints and modifiers that allows for plotting data from animation f-curve. This widget can be used to simulate osciloscopes, visualize real time financial data, create mockup futuristic interfaces etc.
Basic usage is as easy as selecting the "Data Animation Holder" object and animating its Delta Location Z channel. The base shape of the plotting line can be customized by editing the "Controller Curve" (because, who says charts need to be flat!)
The rate at which new values from the f-curve are displayed can also be animated and framerate independent.