Matlab code to generate the Sierpinski Harmony signal
The Matlab script sierpinski.m generates the Sierpinski Harmony signal, described by the bit operations t & (t >> 8).
The generated signal is saved in the wav file sierpinski-harmony.wav.
A clipped version of the same signal, where all non-zero values are clipped to 1, is saved in the wav file sierpinski-harmony-clipped.wav.
For an analysis of these signals, please see my Zhihu article https://zhuanlan.zhihu.com/p/24912672 (in Chinese).