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From a fixed camera, a race car drives past in a straight line at constant high speed. The engine note rises as it approaches and falls as it speeds away.

C2-3-07 Event Transition · source_radiation principle: Doppler Effect (Wave)
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Per-prompt rubric

Basic standards

Visual presence

  • a race car
  • a road

Event: a race car drives past a fixed camera

Audio presence

  • a race car engine

Sound: an engine note

Key standards

Visual physical commonsense (V-PC)

  • The race car approaches, passes, and recedes from the fixed camera at roughly constant speed.

Audio physical commonsense (A-PC)

  • The engine note pitch is noticeably higher during the approach segment than during the receding segment.

Cross-modal physical commonsense (AV-PC)

  • The transition from higher to lower engine pitch aligns in time with the race car's visible passage past the camera.