{ "version": "0.2.5", "normalization": { "algorithm": "FFmpeg loudnorm EBU R128 two-pass linear; independent final PCM input measurement", "targetIntegratedLUFS": -32.0, "truePeakCeilingDBTP": -6.0, "filterTruePeakDBTP": -6.1, "targetLRA": 50, "dualMono": false, "toleranceLU": 0.2, "maximumSpreadLU": 0.4, "measurementFilter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json" }, "generatedAtUtc": "2026-10-14T10:23:04.620836+00:00", "toolVersions": { "ffmpeg": "ffmpeg version 6.1.1-3ubuntu5 Copyright (c) 2000-2023 the FFmpeg developers" }, "sampleRate": 24000, "channels": 1, "encoding": "PCM16", "files": [ { "environmentId": "street", "displayName": "길거리", "pageUrl": "https://commons.wikimedia.org/wiki/File:Sunday_in_the_city_street_noise2.ogg", "directUrl": "https://upload.wikimedia.org/wikipedia/commons/2/24/Sunday_in_the_city_street_noise2.ogg", "creator": "cori (Cori Samuel)", "license": "Public domain (PD-author)", "licenseUrl": "https://commons.wikimedia.org/wiki/Template:PD-author", "attribution": "Suggested: Sunday, 4th May 2008 5.05pm - sounds outside my window, by cori (Cori Samuel), via Wikimedia Commons; public domain.", "expectedSourceSha256": "0ddb0be7eb3427f781c8268bcbc74b8ad7e1fbf75b9f6966e65274dbe85f3d9d", "sourceBytes": 3414104, "directMediaDurationSeconds": 264.254694, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 35, "file": "street.wav", "sourceSha256": "0ddb0be7eb3427f781c8268bcbc74b8ad7e1fbf75b9f6966e65274dbe85f3d9d", "outputLicense": "Public domain (PD-author)", "verificationDateUtc": "2026-10-14", "sha256": "1e12ed82c07550e22905b912a8f862ce10dfe884b5d36a928f7a04628665529d", "bytes": 576044, "duration": 12.0, "rms": 0.06761004836258645, "peak": 0.3353271484375, "conversion": { "startSeconds": 35, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-35.88:measured_TP=-13.37:measured_LRA=4.0:measured_thresh=-45.88:offset=0:linear=true", "pass1": { "input_i": "-35.88", "input_tp": "-13.37", "input_lra": "4.00", "input_thresh": "-45.88", "output_i": "-33.21", "output_tp": "-10.31", "output_lra": "3.40", "output_thresh": "-43.21", "normalization_type": "dynamic", "target_offset": "1.21" }, "pass2": { "input_i": "-35.68", "input_tp": "-13.37", "input_lra": "4.80", "input_thresh": "-45.68", "output_i": "-31.80", "output_tp": "-9.49", "output_lra": "4.80", "output_thresh": "-41.80", "normalization_type": "linear", "target_offset": "-0.20" }, "final": { "input_i": "-32.00", "input_tp": "-9.49", "input_lra": "4.00", "input_thresh": "-42.00", "output_i": "-33.21", "output_tp": "-10.30", "output_lra": "3.40", "output_thresh": "-43.21", "normalization_type": "dynamic", "target_offset": "1.21" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } }, { "environmentId": "mall", "displayName": "쇼핑몰", "pageUrl": "https://commons.wikimedia.org/wiki/File:1_minute_at_the_alexa_mall_in_berlin.ogg", "directUrl": "https://upload.wikimedia.org/wikipedia/commons/f/fd/1_minute_at_the_alexa_mall_in_berlin.ogg", "creator": "thore (Thore)", "license": "Public domain (PD-author)", "licenseUrl": "https://commons.wikimedia.org/wiki/Template:PD-author", "attribution": "Suggested: 1 minute at the Alexa mall in Berlin, by thore, via Wikimedia Commons; public domain.", "expectedSourceSha256": "bb066e130e5d665db57cb5f88e820d053c724d8f777b275213998d2074c6529a", "sourceBytes": 1666896, "directMediaDurationSeconds": 60.05551, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 36, "file": "mall.wav", "sourceSha256": "bb066e130e5d665db57cb5f88e820d053c724d8f777b275213998d2074c6529a", "outputLicense": "Public domain (PD-author)", "verificationDateUtc": "2026-10-14", "sha256": "c1100129d5e05b5fa7a7545b44ebe5cff455576543a27f3c7cbb937fde6a7c69", "bytes": 576044, "duration": 12.0, "rms": 0.027251114844723298, "peak": 0.2449951171875, "conversion": { "startSeconds": 36, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-22.14:measured_TP=-1.82:measured_LRA=1.4:measured_thresh=-32.14:offset=0:linear=true", "pass1": { "input_i": "-22.14", "input_tp": "-1.82", "input_lra": "1.40", "input_thresh": "-32.14", "output_i": "-31.73", "output_tp": "-11.54", "output_lra": "0.90", "output_thresh": "-41.73", "normalization_type": "dynamic", "target_offset": "-0.27" }, "pass2": { "input_i": "-22.09", "input_tp": "-2.36", "input_lra": "1.40", "input_thresh": "-32.09", "output_i": "-31.95", "output_tp": "-12.22", "output_lra": "1.50", "output_thresh": "-41.95", "normalization_type": "linear", "target_offset": "-0.05" }, "final": { "input_i": "-32.01", "input_tp": "-11.68", "input_lra": "1.30", "input_thresh": "-42.01", "output_i": "-31.73", "output_tp": "-11.54", "output_lra": "0.90", "output_thresh": "-41.73", "normalization_type": "dynamic", "target_offset": "-0.27" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } }, { "environmentId": "theater", "displayName": "극장", "pageUrl": "https://freesound.org/people/ElevatorFan2020/sounds/853576/", "directUrl": "https://cdn.freesound.org/previews/853/853576_14269391-lq.mp3", "creator": "ElevatorFan2020", "license": "CC0 1.0 Universal", "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/", "attribution": "Suggested: Crowd Ambience - Theater, by ElevatorFan2020, from Freesound, CC0 1.0.", "expectedSourceSha256": "05c3ece7c088f34700b7610f791c0ad848a24c77be2c32fd1503a78356739a43", "sourceBytes": 1485015, "directMediaDurationSeconds": 176.901224, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 45, "file": "theater.wav", "sourceSha256": "05c3ece7c088f34700b7610f791c0ad848a24c77be2c32fd1503a78356739a43", "outputLicense": "CC0 1.0 Universal", "verificationDateUtc": "2026-10-14", "sha256": "1fa8c57ce39013ff6bc4c0c4e8aff42f295781d27ba763b2990efe4727b4bd27", "bytes": 576044, "duration": 12.0, "rms": 0.027309642076388547, "peak": 0.16900634765625, "conversion": { "startSeconds": 45, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-25.82:measured_TP=-9.26:measured_LRA=0.9:measured_thresh=-35.82:offset=0:linear=true", "pass1": { "input_i": "-25.82", "input_tp": "-9.26", "input_lra": "0.90", "input_thresh": "-35.82", "output_i": "-31.85", "output_tp": "-15.56", "output_lra": "0.80", "output_thresh": "-41.85", "normalization_type": "dynamic", "target_offset": "-0.15" }, "pass2": { "input_i": "-25.70", "input_tp": "-9.26", "input_lra": "1.10", "input_thresh": "-35.70", "output_i": "-31.89", "output_tp": "-15.44", "output_lra": "1.10", "output_thresh": "-41.89", "normalization_type": "linear", "target_offset": "-0.11" }, "final": { "input_i": "-32.00", "input_tp": "-15.44", "input_lra": "0.90", "input_thresh": "-42.00", "output_i": "-31.85", "output_tp": "-15.56", "output_lra": "0.80", "output_thresh": "-41.85", "normalization_type": "dynamic", "target_offset": "-0.15" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } }, { "environmentId": "department", "displayName": "백화점", "pageUrl": "https://freesound.org/people/icmusic/sounds/268941/", "directUrl": "https://cdn.freesound.org/previews/268/268941_40107-lq.mp3", "creator": "icmusic", "license": "CC0 1.0 Universal", "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/", "attribution": "Suggested: US Department store - checkouts, by icmusic, from Freesound, CC0 1.0.", "expectedSourceSha256": "261fda28722fba623483a90b32e7a2ec388c59887f56a5247156b53f1ffb6ccd", "sourceBytes": 2445024, "directMediaDurationSeconds": 292.872, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 90, "file": "department.wav", "sourceSha256": "261fda28722fba623483a90b32e7a2ec388c59887f56a5247156b53f1ffb6ccd", "outputLicense": "CC0 1.0 Universal", "verificationDateUtc": "2026-10-14", "sha256": "101683ffb99c666a36b42b92661fdc404f1e2eb114f52ad03dc971734fcab375", "bytes": 576044, "duration": 12.0, "rms": 0.025934230237752497, "peak": 0.15399169921875, "conversion": { "startSeconds": 90, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-23.99:measured_TP=-8.17:measured_LRA=3.7:measured_thresh=-33.99:offset=0:linear=true", "pass1": { "input_i": "-23.99", "input_tp": "-8.17", "input_lra": "3.70", "input_thresh": "-33.99", "output_i": "-31.23", "output_tp": "-15.60", "output_lra": "2.40", "output_thresh": "-41.23", "normalization_type": "dynamic", "target_offset": "-0.77" }, "pass2": { "input_i": "-24.08", "input_tp": "-8.24", "input_lra": "3.90", "input_thresh": "-34.08", "output_i": "-32.09", "output_tp": "-16.25", "output_lra": "3.90", "output_thresh": "-42.09", "normalization_type": "linear", "target_offset": "0.09" }, "final": { "input_i": "-32.00", "input_tp": "-16.18", "input_lra": "3.70", "input_thresh": "-42.00", "output_i": "-31.23", "output_tp": "-15.59", "output_lra": "2.40", "output_thresh": "-41.23", "normalization_type": "dynamic", "target_offset": "-0.77" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } }, { "environmentId": "market", "displayName": "시장", "pageUrl": "https://commons.wikimedia.org/wiki/File:Italia_Palermo_mercato-Ballaro_20161225_122421.ogg", "directUrl": "https://upload.wikimedia.org/wikipedia/commons/e/e8/Italia_Palermo_mercato-Ballaro_20161225_122421.ogg", "creator": "Marie Flutre (Wikimedia user Timflutre)", "license": "CC BY-SA 4.0", "licenseUrl": "https://creativecommons.org/licenses/by-sa/4.0/", "attribution": "Italia Palermo mercato-Ballaro 20161225 122421, by Marie Flutre, CC BY-SA 4.0, via Wikimedia Commons. Modified by excerpting, trimming, fades, normalization, downmixing, resampling and PCM WAV conversion. The derivative audio remains CC BY-SA 4.0.", "expectedSourceSha256": "fc0075dce8ad05b56460c9f18754c27b2021f21f1c780a595ccda648d33c941d", "sourceBytes": 622200, "directMediaDurationSeconds": 76.696961, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 24, "file": "market.wav", "sourceSha256": "fc0075dce8ad05b56460c9f18754c27b2021f21f1c780a595ccda648d33c941d", "outputLicense": "CC BY-SA 4.0", "verificationDateUtc": "2026-10-14", "sha256": "b85044f3f0a9717f8bc86152ccacaf9752d63f156e9044a6ab955b33caeebad8", "bytes": 576044, "duration": 12.0, "rms": 0.022879647581302516, "peak": 0.45123291015625, "conversion": { "startSeconds": 24, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-25.51:measured_TP=-0.13:measured_LRA=7.1:measured_thresh=-35.54:offset=0:linear=true", "pass1": { "input_i": "-25.51", "input_tp": "-0.13", "input_lra": "7.10", "input_thresh": "-35.54", "output_i": "-30.46", "output_tp": "-6.10", "output_lra": "3.90", "output_thresh": "-40.46", "normalization_type": "dynamic", "target_offset": "-1.54" }, "pass2": { "input_i": "-26.35", "input_tp": "-0.42", "input_lra": "7.10", "input_thresh": "-36.35", "output_i": "-32.84", "output_tp": "-6.91", "output_lra": "7.10", "output_thresh": "-42.84", "normalization_type": "linear", "target_offset": "0.84" }, "final": { "input_i": "-32.01", "input_tp": "-6.62", "input_lra": "7.10", "input_thresh": "-42.03", "output_i": "-30.46", "output_tp": "-6.10", "output_lra": "3.90", "output_thresh": "-40.46", "normalization_type": "dynamic", "target_offset": "-1.54" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } }, { "environmentId": "subway", "displayName": "지하철", "pageUrl": "https://commons.wikimedia.org/wiki/File:TTC_Subway_Line_1_Ambience_-_Museum_to_Union_(Freesound).ogg", "directUrl": "https://upload.wikimedia.org/wikipedia/commons/d/d3/TTC_Subway_Line_1_Ambience_-_Museum_to_Union_%28Freesound%29.ogg", "creator": "PascalHD", "license": "CC BY 4.0", "licenseUrl": "https://creativecommons.org/licenses/by/4.0/", "attribution": "TTC Subway Line 1 Ambience - Museum to Union, by PascalHD, CC BY 4.0, via Wikimedia Commons/Freesound. Modified by excerpting, trimming, fades, normalization, downmixing, resampling and PCM WAV conversion.", "expectedSourceSha256": "41fcf064cde53cef1528fe98721347851e60c070d8ff9f213f354025cf272d4c", "sourceBytes": 3343901, "directMediaDurationSeconds": 425.024, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 65, "file": "subway.wav", "sourceSha256": "41fcf064cde53cef1528fe98721347851e60c070d8ff9f213f354025cf272d4c", "outputLicense": "CC BY 4.0", "verificationDateUtc": "2026-10-14", "sha256": "c613d36d303194a2768da0a93156b2e5a4073460fe899bb2f42ba330521443fd", "bytes": 576044, "duration": 12.0, "rms": 0.03234758164589298, "peak": 0.171966552734375, "conversion": { "startSeconds": 65, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-16.94:measured_TP=-0.23:measured_LRA=4.8:measured_thresh=-26.94:offset=0:linear=true", "pass1": { "input_i": "-16.94", "input_tp": "-0.23", "input_lra": "4.80", "input_thresh": "-26.94", "output_i": "-32.84", "output_tp": "-16.64", "output_lra": "4.10", "output_thresh": "-42.84", "normalization_type": "dynamic", "target_offset": "0.84" }, "pass2": { "input_i": "-16.48", "input_tp": "-0.23", "input_lra": "4.70", "input_thresh": "-26.48", "output_i": "-31.54", "output_tp": "-15.29", "output_lra": "4.80", "output_thresh": "-41.54", "normalization_type": "linear", "target_offset": "-0.46" }, "final": { "input_i": "-32.00", "input_tp": "-15.29", "input_lra": "4.90", "input_thresh": "-42.00", "output_i": "-32.84", "output_tp": "-16.64", "output_lra": "4.10", "output_thresh": "-42.84", "normalization_type": "dynamic", "target_offset": "0.84" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } }, { "environmentId": "cafe", "displayName": "카페", "pageUrl": "https://commons.wikimedia.org/wiki/File:Cafe_ambiance.ogg", "directUrl": "https://upload.wikimedia.org/wikipedia/commons/5/54/Cafe_ambiance.ogg", "creator": "Marble Toast", "license": "CC0 1.0 Universal", "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/", "attribution": "Suggested: Cafe ambiance, by Marble Toast, via Wikimedia Commons, CC0 1.0.", "expectedSourceSha256": "6360791fdcee1f64638f0fc9abd6d2c7a1aa75fd3d2b80033170a02d025099dc", "sourceBytes": 19947952, "directMediaDurationSeconds": 1200.000998, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 0, "file": "cafe.wav", "sourceSha256": "6360791fdcee1f64638f0fc9abd6d2c7a1aa75fd3d2b80033170a02d025099dc", "outputLicense": "CC0 1.0 Universal", "verificationDateUtc": "2026-10-14", "sha256": "6a86d722d23c47d6f3512cf364de18287335b050ad72e639f9a83ba40b669016", "bytes": 576044, "duration": 12.0, "rms": 0.02589284072747213, "peak": 0.131317138671875, "conversion": { "startSeconds": 0, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-19.63:measured_TP=-5.22:measured_LRA=0.3:measured_thresh=-29.63:offset=0:linear=true", "pass1": { "input_i": "-19.63", "input_tp": "-5.22", "input_lra": "0.30", "input_thresh": "-29.63", "output_i": "-32.00", "output_tp": "-17.64", "output_lra": "0.30", "output_thresh": "-42.00", "normalization_type": "dynamic", "target_offset": "-0.00" }, "pass2": { "input_i": "-19.52", "input_tp": "-5.26", "input_lra": "0.30", "input_thresh": "-29.52", "output_i": "-31.89", "output_tp": "-17.63", "output_lra": "0.30", "output_thresh": "-41.89", "normalization_type": "linear", "target_offset": "-0.11" }, "final": { "input_i": "-32.00", "input_tp": "-17.59", "input_lra": "0.30", "input_thresh": "-42.00", "output_i": "-32.00", "output_tp": "-17.64", "output_lra": "0.30", "output_thresh": "-42.00", "normalization_type": "dynamic", "target_offset": "-0.00" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } }, { "environmentId": "rain", "displayName": "비 오는 거리", "pageUrl": "https://commons.wikimedia.org/wiki/File:Urban_Street_on_a_Rainy_Afternoon.flac", "directUrl": "https://upload.wikimedia.org/wikipedia/commons/8/8c/Urban_Street_on_a_Rainy_Afternoon.flac", "creator": "Extemporalist", "license": "CC0 1.0 Universal", "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/", "attribution": "Suggested: Urban Street on a Rainy Afternoon, by Extemporalist, via Wikimedia Commons, CC0 1.0.", "expectedSourceSha256": "ef0511593b1bb0ba47d5c5dafd83eb07ba854b5a65fd5d41b8c76a1b3ff2c22a", "sourceBytes": 91187572, "directMediaDurationSeconds": 1800.0, "sourceVerification": { "status": "verified", "dateUtc": "2026-10-14", "method": "SHA-256, byte count, ffprobe format.duration, full FFmpeg decode", "evidence": ".agent/evidence-v0.2.3/source-integrity.json" }, "selectedSegmentStartSeconds": 180, "file": "rain.wav", "sourceSha256": "ef0511593b1bb0ba47d5c5dafd83eb07ba854b5a65fd5d41b8c76a1b3ff2c22a", "outputLicense": "CC0 1.0 Universal", "verificationDateUtc": "2026-10-14", "sha256": "06d59315d23343fab9c5bd8fbbec044f797d7384480b7f70454b11b1676355ae", "bytes": 576044, "duration": 12.0, "rms": 0.024561801864354006, "peak": 0.220947265625, "conversion": { "startSeconds": 180, "durationSeconds": 12, "seekMethod": "input seek", "fadeSeconds": 0.05, "sampleRate": 24000, "channels": 1, "encoding": "PCM16 little-endian", "loudness": { "pass1Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json", "pass2Filter": "loudnorm=I=-32:TP=-6.1:LRA=50:dual_mono=false:print_format=json:measured_I=-50.72:measured_TP=-31.81:measured_LRA=10.1:measured_thresh=-60.72:offset=0:linear=true", "pass1": { "input_i": "-50.72", "input_tp": "-31.81", "input_lra": "10.10", "input_thresh": "-60.72", "output_i": "-28.22", "output_tp": "-8.24", "output_lra": "8.10", "output_thresh": "-38.22", "normalization_type": "dynamic", "target_offset": "-3.78" }, "pass2": { "input_i": "-52.18", "input_tp": "-31.83", "input_lra": "10.00", "input_thresh": "-62.18", "output_i": "-33.46", "output_tp": "-13.11", "output_lra": "10.10", "output_thresh": "-43.46", "normalization_type": "linear", "target_offset": "1.46" }, "final": { "input_i": "-32.01", "input_tp": "-13.09", "input_lra": "10.10", "input_thresh": "-42.01", "output_i": "-28.22", "output_tp": "-8.24", "output_lra": "8.10", "output_thresh": "-38.22", "normalization_type": "dynamic", "target_offset": "-3.78" } }, "operations": "excerpt, downmix, resample, linear end fades, FFmpeg EBU R128 two-pass linear loudnorm, PCM16 WAV encoding, final loudness/true-peak measurement" } } ] }