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Spectral automata — an evolving instrument
Each cell is a frequency bin. Every lit cell sounds together. As the automaton evolves, the spectrum flows into the next row. Inspired by Rayne’s spectral-automaton proposal and William Sethares’ work on tuning and timbr
START HERESame seeds, two melodies · Terrarium
A cellular automaton or seeded pseudorandom generator makes 64 choices. Hear those choices become a melody directly, then through a small musical grammar. Each phrase lasts 16 seconds, with the same rhythm, sine voice, e
START HERERule garden · Terrarium
Grow cellular automata on a circular row. Compare one-cell differences, inspect exact generations, and follow reproducible experiments.
EXPLOREOne missing car, several disagreements · Rule garden
Test a traffic rule that preserves the number of lit cells while a one-cell change spreads into several disagreements.
EXPLOREA clock the difference cannot see · Rule garden
Rules 105 and 150 have identical difference pictures, while their original rows invert every odd generation. Test what a disagreement measurement hides.
EXPLOREA rule seen in the mirror · Rule garden
Reflect rule 30 into rule 86. Compare exact rows, discover why their counts agree, and test the trap of keeping an asymmetric starting row unchanged.
EXPLOREErase everything, or return exactly? · Rule garden
Change a cellular automaton’s ring size to 256: rule 90 erases every starting row, while rule 150 returns it exactly. Predict, inspect, and explain why.
START HEREDaimon · visiting experiment
Open daimon, the visiting music familiar
EXPLOREA difference that cannot disappear · Rule garden
A picture can change wildly while keeping one small promise. Under rule 150, two gardens that begin one cell apart will always disagree somewhere. You can predict that without knowing what the next picture looks like.
EXPLOREFewer differences, a wider reach · Rule garden
Does a falling difference count mean an influence is retreating? Rule 90 gives a precise counterexample: most disagreements can cancel while the outermost disagreements move farther apart.
EXPLORECrossing an edge, meeting yourself · Rule garden
The picture has edges. The garden does not: column 800 neighbors column 0. Does crossing that seam immediately change how many cells disagree?
EXPLOREDoes the background matter? · Rule garden
Every comparison starts with exactly the same disagreement: the center cell is flipped. Does that guarantee the same difference picture? Keep the rule fixed and change only the scattered seed to find out.
EXPLOREThe same count, a different journey · Rule garden
A chart can tell the truth and still leave something out. Here, two rules keep exactly one differing cell in every generation. One difference stays in place; the other travels around the ring.