Lesson path IX

How Sound Works

Waves, overtones, and why twelve notes.

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Unit 26 · sound

Sound Itself

Overtones, timbre, and why intervals clash.
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26.1
The harmonic series
One string, many pitches. Every note is a chord in disguise.
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26.2
Same note, different voice
Why piano and marimba disagree about C. Watch the wave.
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26.3
Rough or smooth
Consonance, dissonance, and the beating you can hear.
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26.4
Why twelve notes?
Climb twelve fifths and you almost land home. Equal temperament splits the difference.
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The road continues
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