{
 "page": "/sermon-audio-cleanup/",
 "source": "Verified before/after set built 2026-11-03 (diffio-4.6-pro via the public API)",
 "samples": [
  {
   "id": "vfc-53200",
   "type": "VFC",
   "label": "Real archived sermon recording, cleared for Diffio use. Restored with Diffio 4.6 Pro. Both clips are loudness-matched for playback.",
   "claimable_impairments": [
    "reverb/echo"
   ],
   "sources": [
    {
     "role": "real recording",
     "title": "Archived sermon recording (30 s excerpt)",
     "license": "Cleared for Diffio use"
    }
   ],
   "diffio": {
    "model": "diffio-4.6-pro",
    "interface": "Diffio public API via the official Python SDK (diffio on PyPI)",
    "requested_at_utc": "2026-11-03T17:38:38Z",
    "download": "downloadType=audio (audio/mpeg); restored speech only, no background mixed back",
    "post_processing": "none except the loudness gain below"
   },
   "loudness_matching": {
    "standard": "ITU-R BS.1770-4 integrated loudness (pyloudnorm)",
    "target_lufs": -20.0,
    "before_lufs_raw": -17.92,
    "after_lufs_raw": -19.6,
    "before_gain_db": -2.08,
    "after_gain_db": -0.4,
    "note": "one static gain per file; no EQ, limiting, trimming or noise processing"
   },
   "files": {
    "original": "vfc-53200-original.mp3",
    "restored": "vfc-53200-restored.mp3"
   }
  },
  {
   "id": "vfc-52765",
   "type": "VFC",
   "label": "Real archived sermon recording, cleared for Diffio use. Restored with Diffio 4.6 Pro. Both clips are loudness-matched for playback.",
   "claimable_impairments": [
    "reverb/echo"
   ],
   "sources": [
    {
     "role": "real recording",
     "title": "Archived sermon recording (30 s excerpt)",
     "license": "Cleared for Diffio use"
    }
   ],
   "diffio": {
    "model": "diffio-4.6-pro",
    "interface": "Diffio public API via the official Python SDK (diffio on PyPI)",
    "requested_at_utc": "2026-11-03T17:44:05Z",
    "download": "downloadType=audio (audio/mpeg); restored speech only, no background mixed back",
    "post_processing": "none except the loudness gain below"
   },
   "loudness_matching": {
    "standard": "ITU-R BS.1770-4 integrated loudness (pyloudnorm)",
    "target_lufs": -20.0,
    "before_lufs_raw": -18.58,
    "after_lufs_raw": -18.6,
    "before_gain_db": -1.42,
    "after_gain_db": -1.4,
    "note": "one static gain per file; no EQ, limiting, trimming or noise processing"
   },
   "files": {
    "original": "vfc-52765-original.mp3",
    "restored": "vfc-52765-restored.mp3"
   }
  },
  {
   "id": "vfc-108814",
   "type": "VFC",
   "label": "Real archived sermon recording, cleared for Diffio use. Restored with Diffio 4.6 Pro. Both clips are loudness-matched for playback.",
   "claimable_impairments": [
    "reverb/echo",
    "distant microphone"
   ],
   "sources": [
    {
     "role": "real recording",
     "title": "Archived sermon recording (30 s excerpt)",
     "license": "Cleared for Diffio use"
    }
   ],
   "diffio": {
    "model": "diffio-4.6-pro",
    "interface": "Diffio public API via the official Python SDK (diffio on PyPI)",
    "requested_at_utc": "2026-11-03T17:44:05Z",
    "download": "downloadType=audio (audio/mpeg); restored speech only, no background mixed back",
    "post_processing": "none except the loudness gain below"
   },
   "loudness_matching": {
    "standard": "ITU-R BS.1770-4 integrated loudness (pyloudnorm)",
    "target_lufs": -20.0,
    "before_lufs_raw": -27.06,
    "after_lufs_raw": -19.41,
    "before_gain_db": 7.06,
    "after_gain_db": -0.59,
    "note": "one static gain per file; no EQ, limiting, trimming or noise processing"
   },
   "files": {
    "original": "vfc-108814-original.mp3",
    "restored": "vfc-108814-restored.mp3"
   }
  }
 ]
}