# sound (auditory)

a pattern of energy that moves through matter

- Computed level: L3 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: everyday  ·  Arena: sound

## Emergence
**Emerges from:** [audio](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-audio.auditory), [matter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-matter.substance)

**Through:** audio patterns move through matter and are auditory

**Novel properties:**
- auditory perception
- wave propagation

## Examples
- The 2023 eruption of Mount Etna produced low-frequency sound waves detected 200 km away in Catania. *(geophysics)*
- Whale songs travel across ocean basins, their patterns shaped by water temperature and salinity layers. *(marine biology)*
- The cracked bell of Big Ben in London still emits a distinguishable tone despite structural damage. *(engineering)*

## Used by
- [heard](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-heard.auditory) (L7)
- [movies](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-movies.entertainment) (L13)
- [talk](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-talk.spoken) (L9)
- [voice](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-voice.auditory) (L17)
- [words](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-words.language) (L10)

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*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-sound.auditory*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-sound.auditory.json*  
*Every definition provably resolves to space, time, energy and pattern.*