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A coin spins on a wooden table, ringing with a metallic hum that rises in pitch before the coin wobbles and falls flat.

C1-1-01 Steady State · source_material principle: Metal sounds (Material)
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Per-prompt rubric

Basic standards

Visual presence

  • a coin
  • a wooden table

Event: a coin spins on a wooden table

Audio presence

  • a coin

Sound: coin spin hum

Key standards

Visual physical commonsense (V-PC)

  • The coin spins with plausible rigid-body wobble that progresses toward horizontal and ends flat against the table.

Audio physical commonsense (A-PC)

  • The spinning sound is a bright metallic ringing hum with sustained resonance.

Cross-modal physical commonsense (AV-PC)

  • The end of the ringing hum aligns temporally with the coin visibly falling flat against the table.