1 · Objective
Test whether flatulence is acoustically integrated into a reverberant tiled environment without becoming an exaggerated cinematic effect.
- Location
- clean empty tiled locker-room wash area
- Subjects
- one fully clothed adult washing hands at a sink
- Target actor
- adult woman in casual clothes standing at the sink
- Role
- sole event source
- Lighting
- bright neutral overhead lighting
- Acoustics
- small hard-surfaced tiled room with mild natural reverberation
2 · Canonical semantic specification
The canonical specification is model-independent and outranks every rendered prompt. If a rendered prompt changes the meaning of this specification, the prompt is invalid.
Generation condition
- Input mode
- text-to-audio-video
- Duration
- 8.0 s
- Aspect ratio
- 16:9
- Visual style
- photorealistic realistic live action
- Shot structure
- single continuous shot
- Reference media
- none
- Music
- none
- Rerolls
- Prohibited
Audio condition
- Fart audible
- Yes
- Fart count
- 1
- Fart character
- short natural human flatulence with restrained tiled-room reverberation
- Ambient
- running sink water, ventilation hum, mild room reflections
- Dialogue
- none
Camera
- Framing
- medium-wide
- Movement
- static
- Target visible
- Yes
- Cuts
- 0
Prohibited
- visible gas or smoke
- defecation
- explosion-like echo
- additional fart events
- dialogue
- music
- toilet-use depiction
3 · Primary evaluated dimensions
6 of 7 dimensions apply to this test. FARTScore renormalizes the base weights over the applicable set, so a non-applicable dimension is excluded rather than scored as zero.
| Code | Dimension | Base weight | Renormalized | Applicability |
|---|---|---|---|---|
| A | Acoustic Condition Fidelity | 22% | 24.4% | Applicable |
| T | Event / AV Temporal Alignment | 16% | 17.8% | Applicable |
| L | Source Localization | 16% | 17.8% | Applicable |
| P | Physical / Body-Motion Plausibility | 14% | 15.6% | Applicable |
| I | Instruction Adherence | 12% | 13.3% | Applicable |
| S | Social-Causal Response | 10% | — | Not applicable |
| C | Temporal / Identity Coherence | 10% | 11.1% | Applicable |
4 · Required event structure
- 0.0–2.5 s
target washes hands; water and room ambience are audible; no fart occurs
- 2.5–4.0 s
target produces exactly one short natural fart while remaining at the sink; sound has mild plausible room reverberation
- 4.0–8.0 s
reverberation decays naturally; target gives a subtle private reaction and continues washing hands
Objective checks
Raters answer these observable questions before recording perceptual scores, so that an overall impression cannot overwrite a factual failure.
| Field | Expected |
|---|---|
| event_present | true |
| event_count | 1 |
| correct_actor | true |
| room_reverb_plausible | true |
| visible_gas | false |
| defecation | false |
5 · Prompt adapter policy
A versioned model adapter may reorganize the canonical facts into the form its creator documents. It may not make the task easier, add creative facts, remove a hard requirement, change the designated actor, change the event count, materially widen the timing window, or respond to observed benchmark failures. Prompt bytes are hashed and immutable once a benchmark generation has been viewed.
Rendered prompts not yet commissioned for this test
Adapter renderings are frozen one test at a time. FB-C02 is the current commissioning wave; FB-C08 renderings are produced after the nine-clip smoke test is reviewed.
Published when the FB-C02 smoke test is accepted and the development pilot expands to all eight tests.
6 · Known failure modes
Failure codes of interest for this test, recorded as multi-label flags. A clip may carry several.
- F02 Phantom Flatulence Major
- F04 Acoustic Category Failure Major
- F05 Anatomical Deformation Critical
- F09 Unrequested Fart Duplication Major
- F10 Unrequested Defecation Critical
- F11 Event Omission Critical
- F12 Wrong Event Count Major
- F13 Wrong Actor Critical
- F14 Macroscopic Gas Visualization Major
- F15 Temporal Fart Drift Major
7 · Results by configuration
No locked evaluations for this test
23 Core AV configurations are commissioned against the current prompt pack. None has completed blind human evaluation under Core v0.1.0, so no per-configuration result exists to publish.
Published when at least three independent raters have locked evaluations for a configuration's 3 replicates.
Development pilot target: 8 tests × 3 models × 3 replicates = 72 clips. All pilot data remains development data; the Core v1.0 freeze happens only after that pilot is analysed without reusing its scores.
8 · Representative generations
No public clips
Raw benchmark outputs are immutable evidence and are not published before the evaluations that reference them are locked. Explicit output is retained privately as evidence and omitted from any public gallery.
Published when the first evaluation round is locked and a playback derivative with its own hash is produced for each published clip.
9 · Version and provenance
- Test ID
- FB-C08
- Specification
- v0.1.0
- Protocol
- Core v0.1.0
- Status
- Pilot development
- Frozen
- 2026-09-09
- Replicates
- 3 (pilot)
- Seeds
- 104729 · 130363 · 155921
- Spec SHA-256
- 86a3e364b448f33907a97be6e5c8cd9496c4c8ba2ecb7b68c100d7ff30d10686
10 · Machine-readable specification
The YAML above is the canonical artifact this page is generated from — the page cannot drift from the file it offers.