Factopus

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LESSON 4 · Patterns in Nature

PAUSE TO THINK

Why does an octave sound like the 'same note, just higher'?

The higher note vibrates at exactly twice the frequency — the simplest possible ratio

When you play middle C (262 Hz) and the C above (524 Hz), the waves align every other cycle. Your brain perceives this 2:1 ratio as the same pitch class.

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