← Back
In graph Frontier

At a glance

Type
Mental models 0
Role in the graph
Cross-disciplinary bridge
reaches 8 discipline lenses

Key signals

Cross-disciplinary reach
Disciplines
3
  • Physics
  • Cognitive Science
  • 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

Pitchdepends onFrequencyEstablished

Open Frequency →

Pitch depends on frequency.

Mechanism: Higher frequency is heard as higher pitch; the ear and brain map frequency onto pitch.

Fundamental frequencycausesPitchEstablished

Open Fundamental frequency →

fundamental frequency determines pitch.

Mechanism: Perceived pitch tracks the fundamental frequency of a tone.

Sources:
Pitchemerges fromOscillationStrongly supported

Open Oscillation →

Perceived pitch emerges from oscillation rate, but is not identical to it.

Mechanism: Faster oscillation generally raises pitch, yet pitch is a perception shaped by the ear and brain — loudness, timbre and context can shift it, so pitch is not reducible to frequency alone.

Enables · leads to

Melodyemerges fromPitchEstablished

Open Melody →

melody emerges from pitch.

Mechanism: A melody is a pattern of pitches ordered in time.

Sources:

System context

Pitchis part ofAuditory perceptionEstablished

Open Auditory perception →

Pitch is part of auditory perception.

Mechanism: Pitch is one of the things the brain constructs from the incoming signal.

Structural role & consequence

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

  • Currently dark in the atlas: no key date stored · 8 of 8 of its relations lack claim-level evidence.

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

  • Builds on 3 foundations (requires / depends-on / derived-from / emerges-from).

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

  • Structural neighbourhood: 8 → 50 → 138 concepts reachable within 3 hops.

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

13%

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

0 of 8 relations carry evidence · concept has a verified source

Strengths & constraints

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 3 foundation relations. 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.

FrequencyFundamental frequencyOscillationMelodyPitch◀ 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.

Cognitive Science

Through this lens it connects to Auditory perception.

Pitch through the Cognitive Science lens

Music

Through this lens it connects to Timbre, Frequency, Melody and Missing fundamental.

Pitch through the Music lens

Check yourself

A quick check against a common misconception. Nothing is scored — picking the tempting-but-wrong answer just flags an idea worth revisiting.

Which statement is correct?

Common misconceptions

Making a sound louder also makes it higher.

Loudness comes from amplitude; pitch comes from frequency. They change independently.

Look for: Learner turns the volume up and describes the sound as 'higher' rather than 'louder'.

Where you'll meet it

Journeys that walk you through this idea. You may recognise it from more than one.

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

  • Mel scalePsychoacousticsSignal Processing

    crosses a discipline boundary

Explained by stage
lower secondary

Pitch is how high or low a note feels. It comes from frequency: faster vibrations sound higher, slower ones sound lower.

The scientific picture
  • Connects 8 other ideas across 3 disciplines.
  • A cross-disciplinary bridge — its connections reach into 8 other fields.
  • Most of its connections are of the “Cause & effect” kind.
  • It features in 1 learning journey.

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

Sources