{ "page": "/wedding-video-audio/", "source": "Verified before/after set built 2026-11-03 (diffio-4.6-pro via the public API)", "samples": [ { "id": "wedding-01", "type": "synthetic", "label": "Sample made by playing clean speech (LibriTTS, CC BY 4.0) through a real measured lecture-hall impulse response (BUT Speech@FIT Reverb Database, CC BY 4.0) and mixing it with a real recording of about 100 guests at a wedding reception (\"Crowd at a British wedding reception venue\" by Pandos, Freesound, CC0). Restored with Diffio 4.6 Pro. Both clips are loudness-matched for playback.", "claimable_impairments": [ "crowd/background voices", "distant microphone", "reverb/echo" ], "sources": [ { "role": "clean speech", "title": "LibriTTS test-clean speaker 1188, utterances 1188_133604_000024_000000 to 1188_133604_000024_000001", "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/", "utterance_ids": [ "1188_133604_000024_000000", "1188_133604_000024_000001" ], "transcript": "But in this vignette, copied from Turner, you have the two principles brought out perfectly. You have the white of foaming water, of buildings and clouds, brought out brilliantly from a white ground; and though part of the subject is in deep shadow the eye at once catches the one black point admitted in front.", "join": "consecutive sentences of one paragraph joined with 0.35s of digital silence" }, { "role": "room impulse response", "title": "BUT Speech@FIT Reverb Database, room E112 (lecture room, about 900 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/", "changes": "truncated to 1.0 s with a 50 ms fade-out; aligned to the direct-path peak" }, { "role": "impairment recording", "title": "Crowd at a British wedding reception venue", "author": "Pandos", "url": "https://freesound.org/people/Pandos/sounds/362353/", "license": "CC0 1.0", "license_url": "https://creativecommons.org/publicdomain/zero/1.0/", "description_on_source": "A crowd of about 100 people at a wedding reception in South East England.", "freesound_id": "362353" } ], "diffio": { "model": "diffio-4.6-pro", "interface": "Diffio public API via the official Python SDK (diffio on PyPI)", "requested_at_utc": "2026-11-03T17:38:44Z", "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": -20.5, "before_lufs_raw": -19.17, "after_lufs_raw": -20.4, "before_gain_db": -1.33, "after_gain_db": -0.1, "note": "one static gain per file; no EQ, limiting, trimming or noise processing" }, "files": { "original": "wedding-01-original.mp3", "restored": "wedding-01-restored.mp3" } }, { "id": "wedding-02", "type": "synthetic", "label": "Sample made by mixing clean speech (LibriTTS, CC BY 4.0; softened above 5 kHz) with real recordings of an outdoor crowd (\"Expectant Outdoor Crowd\" by CHallSmith, Freesound, CC0) and a windy beach (\"VeryWindyRocksBeach.wav\" by shelbyshark, Freesound, CC0). Restored with Diffio 4.6 Pro. Both clips are loudness-matched for playback.", "claimable_impairments": [ "crowd/background voices" ], "sources": [ { "role": "clean speech", "title": "LibriTTS test-clean speaker 8555, utterances 8555_284449_000028_000000 to 8555_284449_000028_000001", "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/", "utterance_ids": [ "8555_284449_000028_000000", "8555_284449_000028_000001" ], "transcript": "After they had eaten all they could, and the servants had been sent away, Trot related her adventures, telling how, with the assistance of the billygoat, she had turned the tables on the wicked Boolooroo. Then she gave Rosalie back her magic ring, thanking the kind Witch for all she had done for them.", "join": "consecutive sentences of one paragraph joined with 0.35s of digital silence" }, { "role": "impairment recording", "title": "Expectant Outdoor Crowd", "author": "CHallSmith", "url": "https://freesound.org/people/CHallSmith/sounds/870619/", "license": "CC0 1.0", "license_url": "https://creativecommons.org/publicdomain/zero/1.0/", "description_on_source": "Excited crowd sitting on beach. Waiting for event. Could be any happy crowd.", "freesound_id": "870619" }, { "role": "impairment recording", "title": "VeryWindyRocksBeach.wav", "author": "shelbyshark", "url": "https://freesound.org/people/shelbyshark/sounds/476504/", "license": "CC0 1.0", "license_url": "https://creativecommons.org/publicdomain/zero/1.0/", "description_on_source": "Very windy day walking through rocks on a beach, sound of waves and rocks", "freesound_id": "476504" } ], "diffio": { "model": "diffio-4.6-pro", "interface": "Diffio public API via the official Python SDK (diffio on PyPI)", "requested_at_utc": "2026-11-03T17:38:45Z", "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": -21.0, "before_lufs_raw": -19.79, "after_lufs_raw": -21.09, "before_gain_db": -1.21, "after_gain_db": 0.09, "note": "one static gain per file; no EQ, limiting, trimming or noise processing" }, "files": { "original": "wedding-02-original.mp3", "restored": "wedding-02-restored.mp3" } } ] }