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In graph Frontier
PsychoacousticsMusicEstablished

Missing fundamental

Hearing a pitch at a fundamental frequency even when that frequency is absent from the sound.

Missing fundamentalHarmonic seriesPitchFundamental frequencyOvertoneAdditive synthesisStanding waveTimbreConsonance

At a glance

Type
information
Disciplines 2
PsychoacousticsMusic
Mental models 0
—
Role in the graph
Cross-disciplinary bridge
reaches 4 discipline lenses

Key signals

Cross-disciplinary reach
Disciplines
2
  • Psychoacoustics
  • Music
Evidence & development

Dependencies

What this concept builds on and what it makes possible — derived from the atlas’s dependency, causal and structural relations, not from every related edge.

Foundations · builds on

Missing fundamentalemerges fromHarmonic seriesEstablished

Open Harmonic series →

missing fundamental emerges from the harmonic series.

Mechanism: The regular harmonic spacing implies a fundamental the ear restores.

Sources:

Structural role & consequence

Interpreted from the current atlas graph — what the connections mean, not just how many there are.

  • 50% of its relationships cross field boundaries, reaching 4 other disciplines — a cross-disciplinary connector.

    structural · Structural graph analysis — not a claim of importance, causation or history.

  • Currently dark in the atlas: no key date stored · 2 of 2 of its relations lack claim-level evidence.

    atlas representation · Describes the current Thinking OS representation, not the state of the world.

  • Builds on 1 foundation (requires / depends-on / derived-from / emerges-from).

    structural · Structural graph analysis — not a claim of importance, causation or history.

  • Structural neighbourhood: 2 → 13 → 56 concepts reachable within 3 hops.

    structural · Structural reach — being reachable is not the same as being understood.

50%

cross-field
1 within-field, 1 cross-field

0 of 2 relations carry evidence · concept has a verified source

Strengths & constraints

Strengths

  • Cross-disciplinary connector — 50% of its relationships cross field boundaries. structural

Constraints

  • Evidence coverage currently thin in the atlas — few of its relationships carry claim-level evidence. atlas representation
  • No dated history stored — the atlas records no key date for this concept. atlas representation

Conditions

  • Its dependency reading rests on 1 foundation relation. structural
  • Read structurally — most of its relationships carry no external evidence yet, so claims here are graph-derived. structural

Dependency radial

What this concept builds on (left) and what it makes possible (right) — derived from dependency and causal relations.

Harmonic seriesMissing fundamental◀ builds onenables ▶

Seen through each discipline

How this concept sits in each of its fields — derived from its real connections in the graph, not asserted.

Psychoacoustics

Missing fundamental is studied in this field.

Missing fundamental through the Psychoacoustics lens →

Music

Through this lens it connects to Pitch.

Missing fundamental through the Music lens →

Concepts that look related but are not yet connected here — candidates for a connection to reason about, not established links.

This idea also appears in…

The same structure shows up in other disciplines. These are real recurrences drawn from the graph — a starting point for asking “what carries over, and what changes?”

Concepts

The scientific picture
  • Connects 2 other ideas across 2 disciplines.
  • A cross-disciplinary bridge — its connections reach into 4 other fields.
  • Most of its connections are of the “Cause & effect” kind.

Derived from the graph’s real structure — observations, not a score.

Sources