{
  "version": 1,
  "reviewer": "Automated multimodal review, not human listening",
  "mediaNote": "Complete original audio files supplied.",
  "model": "gemini-3.8-flash",
  "modelCheck": {
    "checkedAt": "2026-10-16T17:07:17.964Z",
    "endpoint": "https://generativelanguage.googleapis.com/v1beta/models",
    "requestedModel": "gemini-3.8-flash",
    "model": {
      "name": "models/gemini-3.8-flash",
      "version": "3.0",
      "displayName": "Gemini 3.8 Flash",
      "description": "Gemini 3.8 Flash",
      "inputTokenLimit": 1048576,
      "outputTokenLimit": 65536,
      "supportedGenerationMethods": [
        "generateContent",
        "countTokens",
        "createCachedContent",
        "batchGenerateContent"
      ],
      "temperature": 1,
      "topP": 0.95,
      "topK": 64,
      "maxTemperature": 2,
      "thinking": true
    }
  },
  "prompt": "Listen to every audio attachment. These are generated voices for a class. First transcribe the words actually heard for each clip; do not copy the supplied target script if it differs. Describe audible pace, emotion, clarity, pronunciation and distortion. Compare v4 neutral/excited/reassuring, v4 neutral/low/high stability, and v2 neutral/style in those separate groups. Do not infer a difference from the filename. If the difference is unclear, say so. Do not certify the speaker identity. Explain uncertainty and any swallowed or added words. Return JSON {clips:[{id,transcript,delivery,artifacts:[],verdict:\"usable\"|\"review\"|\"reject\"}],comparisons:[{group,observation,uncertainty}]}.",
  "inputs": [
    {
      "id": "voice-neutral",
      "sha256": "d9e76ff2a7ecf451fec11be9cecea733e21e3ef6bb92fe60640311ea6eec6f0e"
    },
    {
      "id": "voice-excited",
      "sha256": "773f2ba83f8241a11477c68ace57187a70332c2c1f24be9d0b092b631c41a133"
    },
    {
      "id": "voice-reassuring",
      "sha256": "2c7093c77a813877f8b63b91c0271d2f281a39eedac539b367f6607665e66827"
    },
    {
      "id": "voice-low-stability",
      "sha256": "3b32f2b9fb04c85174ae6d75b96c86b3fe9267562f4d3f45e0bb724a8999e590"
    },
    {
      "id": "voice-high-stability",
      "sha256": "5bb1c2bbf14b6c2688df73d0bd0ba446aa6eab2832afdea9e6ac8c24ae175a2f"
    },
    {
      "id": "voice-v2-neutral",
      "sha256": "91a96aed38c1da61499b7fd0ad5ac56d4ea2f0c39869994ae318f2ce86cae9d8"
    },
    {
      "id": "voice-v2-style",
      "sha256": "fc00aefa2a28eb7afe692aa41306d12cf1df299f853dbb56c405b7db5e5ac291"
    },
    {
      "id": "voice-whispering",
      "sha256": "6e113d5bede87ef79c33c59b1840e93e480722b2153d9d2b5d0d3cf5e447b8ef"
    },
    {
      "id": "voice-urgent",
      "sha256": "6e24e051761443e49775952eb3f35048f357389ec33a6b328420a1350a75579d"
    }
  ],
  "generatedOn": "2026-10-16T17:07:36.239Z",
  "elapsedMs": 18274,
  "usage": {
    "promptTokenCount": 2291,
    "candidatesTokenCount": 1316,
    "totalTokenCount": 4646,
    "promptTokensDetails": [
      {
        "modality": "TEXT",
        "tokenCount": 541
      },
      {
        "modality": "AUDIO",
        "tokenCount": 1750
      }
    ],
    "thoughtsTokenCount": 1039,
    "serviceTier": "standard"
  },
  "verdict": {
    "clips": [
      {
        "id": "voice-neutral",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Measured, calm, and deliberate instructional pace with well-placed pauses. The tone is neutral, articulate, and clear with clean British English pronunciation and no audible distortion.",
        "artifacts": [],
        "verdict": "usable"
      },
      {
        "id": "voice-excited",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Upbeat, lively cadence with a slightly higher pitch contour and brisk energy. Enunciation is sharp, clear, and uncompressed.",
        "artifacts": [],
        "verdict": "usable"
      },
      {
        "id": "voice-reassuring",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Gentle, warm, and steady delivery with soft phrasing. Pacing is relaxed, clear, and soothing without noticeable acoustic artifacts.",
        "artifacts": [],
        "verdict": "usable"
      },
      {
        "id": "voice-low-stability",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Natural, moderate speaking rate with subtle pitch inflections. Intonation remains clear and controlled throughout without vocal breakdown.",
        "artifacts": [],
        "verdict": "usable"
      },
      {
        "id": "voice-high-stability",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Very even, consistent pace and controlled pitch contour. Intonation is uniform, clear, and steady with crisp diction.",
        "artifacts": [],
        "verdict": "usable"
      },
      {
        "id": "voice-v2-neutral",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Noticeably faster tempo with shorter inter-phrase pauses. Diction is clear, though the acoustic texture displays slight synthetic compression.",
        "artifacts": [
          "minor synthetic processing resonance"
        ],
        "verdict": "usable"
      },
      {
        "id": "voice-v2-style",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Brisk tempo with compact pauses, very similar in cadence to voice-v2-neutral. Pronunciation is distinct and clean with subtle processing texture.",
        "artifacts": [
          "minor synthetic processing resonance"
        ],
        "verdict": "usable"
      },
      {
        "id": "voice-whispering",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Fully unvoiced, whispered delivery with prominent breathiness. The pace is slow and deliberate; sibilant sounds are pronounced.",
        "artifacts": [
          "heavy breath noise inherent to whispered synthesis"
        ],
        "verdict": "usable"
      },
      {
        "id": "voice-urgent",
        "transcript": "Before you press publish, pause. Check the face, check the voice, and make sure the character still feels like the same person.",
        "delivery": "Forceful, projected vocal energy with emphatic stress on key directive words. Tone is urgent and authoritative, without clipping or distortion.",
        "artifacts": [],
        "verdict": "usable"
      }
    ],
    "comparisons": [
      {
        "group": "v4 neutral vs excited vs reassuring",
        "observation": "All three variants share the same core vocal timbre and clear British pronunciation, but diverge in dynamic energy. 'voice-excited' has a brighter, slightly elevated pitch curve and energetic cadence. 'voice-reassuring' exhibits softer voice onset and a calmer, warmer cadence. 'voice-neutral' remains balanced between the two with standard expository pauses.",
        "uncertainty": "The difference between 'voice-neutral' and 'voice-reassuring' is subtle, resting largely on soft phonation rather than drastic timing shifts."
      },
      {
        "group": "v4 neutral vs low stability vs high stability",
        "observation": "Acoustic divergence across these three takes is minimal. All three feature nearly identical durations (~8 seconds), pause placements, and vocal weight. 'voice-low-stability' exhibits slightly more natural micro-variations in pitch cadence, while 'voice-high-stability' maintains a flatter, more uniform melodic line.",
        "uncertainty": "Distinctions between low and high stability are extremely subtle; without side-by-side spectral inspection, the audible performance difference is difficult to pinpoint definitively by ear."
      },
      {
        "group": "v2 neutral vs v2 style",
        "observation": "Both v2 clips run roughly 6.5 seconds, delivering the prompt substantially faster than the v4 clips, with tighter pauses after 'pause' and 'voice'. Audible differentiation between 'voice-v2-neutral' and 'voice-v2-style' in prosody, pitch range, and pace is virtually indistinguishable.",
        "uncertainty": "A clear, audibly perceptible stylistic difference between voice-v2-neutral and voice-v2-style cannot be reliably confirmed from listening alone."
      }
    ]
  }
}