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Intervals

Phonology · Exhibit

Where do notes
come from?

A children's taunt uses two falling notes. Seven experiments work back to the string, as we know it now. Story walks the history.

Step 1 of 7

A question before theory

Why these notes?

In many European-derived cultures, children taunt each other on the same two falling notes. Speech reuses a small stock of sounds, and this call lets you test whether music does something similar. A tone above the pair sits close by, and your ear keeps it out of the call. The next six steps trace that grouping back to a vibrating string.

Play each tone alone, then play the experiment for the full row. Listen for the first two to register as a familiar falling unit, while Above both breaks that shape.

Read the claim carefully

Every culture selects from the same material.

The harmonic series is a physical property of many periodic sounds, so it is available to any ear on Earth. Scales, tuning systems, interval categories and musical meanings are built by people. The useful question is which of these sound-relations a tradition selected, and what its music then did with them.

Explore

One string carried whole-number pitch ratios inside a tone.

Phonology · The vibrating string

This is a monochord.

One measured string runs over a sounding box, and the rule beneath reads its length. Move the bridge, and the part of the string that can still vibrate gets shorter. Pick a stop, then pluck. Every stop you take sounds higher than the one before it, and the readout counts the rise in hertz.

One measured string over a sounding box. Move the bridge to shorten the part that vibrates, then pluck. A shorter length sounds higher, and the readout counts it in hertz.

Set the bridgewhole string · 110 Hz