Week 11: When sonification lies

Audit aesthetic choices, omitted values and suggestive musical framing.

Week 11 · Rhetorical audit

18 October 2027

At what point does a compelling listening experience become a misleading scientific claim?

Data object
paired honest and deceptive mappings
Lecture deckOpen the taught visual narrative

The question

Quantisation can invent steps, reverberation can imply scale, a major chord can suggest resolution and selective filtering can erase ambiguity. We audit two versions of one dataset and label the rhetorical work done by musical choices.

Signal chain

Source values → list transformations → identify added musical structure → compare interpretation with and without a mapping legend → revise. A beautiful result is welcome, but beauty is not evidence.

The class develops a disclosure checklist covering provenance, units, scaling, filtering, compression, missing data, uncertainty and compositional additions.

Observation guide 11

Rhetorical audit

Use this page before the slides, then return to the checkpoint after the lab.

After this week, you can

  1. Identify implications added by scale, timbre, harmony and reverberation.
  2. Separate measured data, mapping and composition in a public interface.
  3. Revise the cue that creates the largest unsupported listener inference.

Inspectable teaching model

normalised value
A noisy sequence presented first as raw values, then as quantised notes with a cadence. Values are a teaching model, not an astronomical observation.

Worked notebook

Measure the certainty gap

A noisy sequence presented first as raw values, then as quantised notes with a cadence.

  1. Ask listeners what they think changed in the source.
  2. Reveal the quantisation, chord and reverberation added by the designer.
  3. Compare perceived certainty with the overlapping source values.
  4. Remove or relabel the strongest unsupported cue, then repeat the question.

What the method supportsThe cadence can make an ambiguous ending feel resolved. Disclosure identifies the addition; revision tests whether the unsupported certainty actually decreases.

CheckpointWhy is a complete mapping legend necessary but still insufficient for an ethically persuasive sonification?Reveal the reasoning

Disclosure enables critique but does not cancel a misleading design.

A listener may still absorb the interface's musical and visual implications before reading a legend. The designer must test those inferences and revise cues that overpower the evidence.

Read from the source

Data sonification collection by NASA Chandra X-ray Center

Choose a documented public work whose mappings can be reconstructed and tested.

Where this goes next

The hostile reading becomes the final pre-release audit for the listening instrument.

Teaching team