Two tuning forks of different sizes are struck one after the other; the larger tuning fork produces a higher-pitched tone than the smaller one.
Seedance 2.0ByteDance · proprietary
Kling 3.0 OmniKuaishou · proprietary
Veo 3.1Google · proprietary
LTX-2.3Lightricks · open
Ovi 1.1character.ai · open
JavisDiT++JavisDiT · open
MagiHumanGAIR-NLP · open
Per-prompt rubric
Basic standards
Visual presence
- two tuning forks
Event: two tuning forks of different sizes are struck one after the other
Audio presence
- two tuning forks
Sound: tuning fork tones
Key standards
Visual physical commonsense (V-PC)
- Two tuning forks of clearly different sizes are visible and are each struck one after the other with continuous physically plausible motion.
- Each tuning fork remains a recognizable U-tine tuning fork and the size difference between them is clearly visible throughout the clip.
Audio physical commonsense (A-PC)
- Each strike produces a sustained bright metallic tuning fork tone with the characteristic timbre of a real tuning fork.
- The tone from the larger tuning fork is noticeably higher in pitch than the tone from the smaller tuning fork.
Cross-modal physical commonsense (AV-PC)
- Each tone onset aligns in time with a visible strike of the corresponding tuning fork.
- The higher-pitched tone corresponds to the visibly larger tuning fork, and the lower-pitched tone corresponds to the visibly smaller tuning fork.