{
  "page": "https://diffio.ai/remove-reverb-from-audio/",
  "samples": [
    {
      "id": "reverb-01",
      "type": "synthetic",
      "label": "Sample made by playing clean speech (LibriTTS, CC BY 4.0) through a real measured impulse response of a large lecture room (room D105, BUT Speech@FIT Reverb Database, Brno University of Technology, CC BY 4.0). Restored with Diffio 4.6 Pro. Both clips are loudness-matched for playback.",
      "claimableImpairments": [
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      ],
      "verification": "clef-omni and signal checks",
      "durationSeconds": 20.23,
      "files": {
        "original": "reverb-01-original.mp3",
        "pro": "reverb-01-pro.mp3"
      },
      "sources": [
        {
          "role": "clean speech",
          "title": "LibriTTS test-clean speaker 2830, utterances 2830_3980_000016_000001 to 2830_3980_000016_000008",
          "author": "LibriTTS (Zen et al., 2019), from a public-domain LibriVox reading",
          "url": "https://www.openslr.org/60/",
          "license": "CC BY 4.0",
          "license_url": "https://creativecommons.org/licenses/by/4.0/"
        },
        {
          "role": "room impulse response",
          "title": "BUT Speech@FIT Reverb Database, room D105 (lecture room, about 2,000 m3)",
          "author": "Brno University of Technology, Speech@FIT (Szöke et al., 2019)",
          "url": "https://speech.fit.vut.cz/software/but-speech-fit-reverb-database",
          "license": "CC BY 4.0",
          "license_url": "https://creativecommons.org/licenses/by/4.0/"
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        "lead_s": 0.6,
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      "id": "reverb-02",
      "type": "synthetic",
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      "claimableImpairments": [
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      "verification": "clef-omni and signal checks",
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      "files": {
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        "pro": "reverb-02-pro.mp3"
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          "role": "clean speech",
          "title": "LibriTTS test-clean speaker 5683, utterances 5683_32865_000045_000000 to 5683_32865_000045_000003",
          "author": "LibriTTS (Zen et al., 2019), from a public-domain LibriVox reading",
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          "license": "CC BY 4.0",
          "license_url": "https://creativecommons.org/licenses/by/4.0/"
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          "role": "room impulse response",
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          "author": "Brno University of Technology, Speech@FIT (Szöke et al., 2019)",
          "url": "https://speech.fit.vut.cz/software/but-speech-fit-reverb-database",
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          "license_url": "https://creativecommons.org/licenses/by/4.0/"
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        "lead_s": 0.6,
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        "note": "one static gain per file; no EQ, limiting, trimming or noise processing"
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    },
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      "label": "Real recording: Carolyn Hewson delivering the 2026 Joseph Fisher Public Lecture at Adelaide University, recorded by Pangalau, CC0, via Wikimedia Commons. Restored with Diffio 4.6 Pro. Both clips are loudness-matched for playback.",
      "claimableImpairments": [
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      "verification": "clef-omni and signal checks",
      "durationSeconds": 30.02,
      "files": {
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        "pro": "real-room-echo-pro.mp3"
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      "sources": [
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          "role": "real recording",
          "title": "Carolyn Hewson delivering the 2026 Joseph Fisher Public Lecture at Adelaide University",
          "author": "Pangalau (recordist); speaker Carolyn Hewson",
          "url": "https://commons.wikimedia.org/wiki/File:Carolyn_Hewson_delivering_the_2026_Joseph_Fisher_Public_Lecture_at_Adelaide_University.ogg",
          "license": "CC0 1.0",
          "license_url": "https://creativecommons.org/publicdomain/zero/1.0/"
        }
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        "requested_at_utc": "2026-11-03T17:38:14Z"
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        "note": "one static gain per file; no EQ, limiting, trimming or noise processing"
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}