[diydsp]

I believe it's not a "problem." It's expression, like a painting. Every work of audio reactive LEDs is a reflection of the designer's intent, constraints, biases, imagination, and the context in which it was designed. Like painting, there are technical chops, the craft, like the first half of the article, the lag, the mapping of frequency and amplitude, etc. But once those are mastered the road becomes wide open. That's the "what makes someone tap their foot?" the article asks.