{
  "dataset_id": "libricount",
  "files": [
    {
      "bytes": 11170888,
      "path": "manifest.jsonl",
      "sha256": "0ffa8237f2d6f68a298bf9dec828389701bb30267448cc37970a4fd7611b074a"
    },
    {
      "bytes": 933580800,
      "path": "data/test/shard-000000.tar",
      "samples": 5720,
      "sha256": "d5c8405309e2023321d115bfb6a08c08d71551b92feb4a7bd39e409de464f179",
      "split": "test"
    }
  ],
  "format": "webdataset",
  "manifest": {
    "bytes": 11170888,
    "path": "manifest.jsonl",
    "sha256": "0ffa8237f2d6f68a298bf9dec828389701bb30267448cc37970a4fd7611b074a"
  },
  "metadata": {
    "benchmark_revision": {
      "audio_unchanged": true,
      "kind": "chime-v1-usage",
      "previous_publication_sha256": "f2165cdbb3bd346028d69efd624cd781762e8ed0dc9367e24d4fecdb69cef13b",
      "previous_revision": "7e568b331c2ef0600d131e3223418153e08a5852",
      "source_selection_unchanged": true
    },
    "catalogue_version": "public-acquisition-2026-10-28-v1",
    "preparation": {
      "adapter_version": 1,
      "groups": 5720,
      "metadata_joined_examples": 5720,
      "native_audio": "unchanged",
      "quality_policy": "Exclude invalid targets/payloads only; retain noise, difficulty, overlap, and valid score distributions.",
      "splits": {
        "test": 5720
      }
    },
    "scientific_admission": "pending",
    "source": {
      "access_conditions": "Public HTTPS download without registration or signed agreement. Preserve source attribution and license restrictions.",
      "citation": "St\u00f6ter, Chakrabarty, Habets & Edler (2018), LibriCount dataset.",
      "license": "CC-BY-4.0",
      "metadata_url": "https://zenodo.org/api/records/1216072",
      "notes": "",
      "quality_exclusions": {
        "exclude": [
          "missing or malformed required target with no recoverable authoritative annotation",
          "audio/annotation identifier mismatch or invalid time bounds",
          "author-withdrawn examples",
          "undecodable or truncated files"
        ],
        "retain": [
          "background noise",
          "difficulty, accents, child speech or dysarthria severity",
          "low agreement when valid annotator distributions remain available",
          "overlap within recordings or across datasets; annotate overlap and group related examples"
        ],
        "task_specific": "Mask only invalid task targets when other targets remain valid; do not infer poor-label status from acoustic difficulty."
      },
      "release": "v1.0.0",
      "selection": "Full LibriCount10-0dB release, preserving all speaker-count classes 0\u201310 and source mixture metadata.",
      "source_url": "https://zenodo.org/records/1216072",
      "subset_policy": {
        "deterministic_order": "Preserve official splits; group by speaker/session where supplied, stratify by declared labels/language, order groups by SHA256(\"chime-public-v1\\0\" + group_id), add complete groups round-robin while both byte budgets permit. Record every included/excluded ID and reason.",
        "downmix": false,
        "expanded_parent_bytes": 917964087,
        "extraction": "Stream source archives; materialize only selected native files and required metadata. Do not assemble split source archives or extract the full parent without a separate measured workspace allowance.",
        "inventory_evidence": "docs/curation/speech-selections/libricount-archive-bounds.json",
        "manifest_required": true,
        "native_audio": true,
        "pcm_bytes_limit": 917964087,
        "resample": false,
        "selection": "Full LibriCount10-0dB release, preserving all speaker-count classes 0\u201310 and source mixture metadata.",
        "stored_bytes_limit": 917964087
      }
    },
    "source_objects": [
      {
        "bytes": 832499962,
        "checksum": {
          "algorithm": "md5",
          "value": "30c8f844dc59fa65d216d53db9dc37e2"
        },
        "dataset": "libricount",
        "name": "libricount/LibriCount10-0dB.zip",
        "url": "https://zenodo.org/records/1216072/files/LibriCount10-0dB.zip?download=1"
      }
    ]
  },
  "native_audio_bytes": 915451680,
  "pcm_bytes": 915200000,
  "sample_count": 5720,
  "schema_version": 1,
  "scientific_admission": "pending",
  "shard_size_bytes": 1000000000,
  "shards": [
    {
      "bytes": 933580800,
      "path": "data/test/shard-000000.tar",
      "samples": 5720,
      "sha256": "d5c8405309e2023321d115bfb6a08c08d71551b92feb4a7bd39e409de464f179",
      "split": "test"
    }
  ],
  "stage": "prepared-candidate",
  "status": "complete",
  "validation": {
    "audio_sha256": "all_assets",
    "shard_readback": "all_members_and_native_headers",
    "source_decode": "all_frames_finite"
  }
}