Waveform

Light and sound can be described as waves traveling through some medium. A simple wave can take an easily described form such as a sine function, but if you put a bunch of waves together, such as a burst of many wavelengths of light or a musical chord, the waves add together in constructive and destructive ways to get a much more complex waveform, such as this shown by Matt De Lanoy. I wonder if you can perform a fourier transform on a stack of LEGO elements.