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      "bytes": 199244,
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      "sampleRate": 24000,
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        {
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      ],
      "title": "ferrari355underhood4.mp3",
      "author": "enginemusic",
      "sourceVehicle": "Ferrari 355 Spider",
      "license": "CC-BY-3.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
      "sourceUrl": "https://freesound.org/people/enginemusic/sounds/43484/",
      "downloadUrl": "https://cdn.freesound.org/previews/43/43484_462458-hq.mp3",
      "provenance": "Recorded in 1997 inside a Ferrari 355 Spider engine compartment with Core Sound binaural microphones and Sony D8 DAT; one microphone by intake and one by valve cover. Public HQ MP3 preview, not the original master.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "koenigsegg-one-1",
        "bmw-f22-eurofighter"
      ],
      "use": "Adapted proxy texture blended with original synthesis; not a recording of the represented game model. BMW F22 Eurofighter uses an authored V8 drift-build proxy; the visual asset does not document its precise engine build."
    },
    {
      "id": "porsche-911",
      "file": "porsche-911-v1.wav",
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          "sourceStart": 2.25,
          "sourceDuration": 1.5
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      ],
      "title": "porsche_911.wav",
      "author": "mharo",
      "sourceVehicle": "Porsche 911 (year/variant unspecified)",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/mharo/sounds/55727/",
      "downloadUrl": "https://cdn.freesound.org/previews/55/55727_267249-hq.mp3",
      "provenance": "Porsche 911 recorded in a Barcelona street. Public HQ MP3 preview of the WAV; no claim about engine generation or microphone position.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "porsche-930-turbo",
        "porsche-911-gt3"
      ],
      "use": "Adapted proxy texture blended with original synthesis; not a recording of the represented game model."
    },
    {
      "id": "mustang-idle",
      "file": "mustang-idle-v1.wav",
      "bytes": 96044,
      "sha256": "ffa4bd4561bdd87b388e2b3948187136a858347e50f08687d5d66319a0f687af",
      "duration": 2,
      "sampleRate": 24000,
      "sourceFile": "mustang-119449.mp3",
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          "rev": 0.1,
          "sourceStart": 4,
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      ],
      "title": "Ford Mustang Engine (1985).wav",
      "author": "lmbubec",
      "sourceVehicle": "1985 Ford Mustang",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/lmbubec/sounds/119449/",
      "downloadUrl": "https://cdn.freesound.org/previews/119/119449_1990688-hq.mp3",
      "provenance": "Ford Mustang idling before engine shutdown. Public HQ MP3 preview; cylinder count is not asserted by the source description.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [],
      "use": "Legacy idle-only proxy retained byte-for-byte for archival reproducibility; no current catalogue car selects this bank. Superseded for Maserati and Mercedes by the documented GranTurismo and AMG V8 sources on 2026-10-03."
    },
    {
      "id": "aston-acceleration",
      "file": "aston-acceleration-v1.wav",
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      "sha256": "9024c1e9587a7e0694478ac0bbca9635c8558042ecb1320b2996619c09fafc92",
      "duration": 2.002,
      "sampleRate": 24000,
      "sourceFile": "aston-0600.wav",
      "sourceSha256": "e63e3160ba88112e6d8f78bb89413078b28701b80c79541147b9d7a02d201fe0",
      "layers": [
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        {
          "start": 1.001,
          "end": 2.002,
          "rev": 0.8,
          "sourceStart": 1.4,
          "sourceDuration": 1.1
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      ],
      "title": "Acceleration Aston Martin",
      "author": "Joseph SARDIN / BigSoundBank",
      "sourceVehicle": "Aston Martin (model unspecified)",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://bigsoundbank.com/acceleration-aston-martin-s0600.html",
      "downloadUrl": "https://bigsoundbank.com/UPLOAD/bwf-en/0600.wav",
      "provenance": "Outdoor acceleration recording, sound 0600. Source does not identify the model, cylinder count or recording microphone position.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "aston-martin-one-77"
      ],
      "use": "Adapted proxy texture blended with original synthesis; not a recording of the represented game model."
    },
    {
      "id": "huracan-v10",
      "file": "huracan-v10-v1.wav",
      "bytes": 172844,
      "sha256": "bdbe916f5dadcf1261e98ecc33d751269f791e7991513629a158817aa30b798f",
      "duration": 3.6,
      "sampleRate": 24000,
      "sourceFile": "huracan-564375.mp3",
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          "sourceStart": 26.15,
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      ],
      "title": "Lamborghini Sounds",
      "author": "JaimeLopes",
      "sourceVehicle": "Lamborghini Huracán EVO Spyder V10",
      "sourceFamily": "V10",
      "license": "CC-BY-4.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
      "sourceUrl": "https://freesound.org/people/JaimeLopes/sounds/564375/",
      "downloadUrl": "https://cdn.freesound.org/previews/564/564375_628040-hq.mp3",
      "provenance": "Recorded on Tascam DR-07 internal microphones while entering, starting and driving a Huracán EVO Spyder. Door/start transients are omitted; public HQ MP3 preview.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Variant proxy for the game Huracan (variant unspecified). Source is an EVO Spyder; no same-year or same-variant claim.",
      "cars": [
        "lamborghini-huracan"
      ]
    },
    {
      "id": "murcielago-v12",
      "file": "murcielago-v12-v1.wav",
      "bytes": 177644,
      "sha256": "d96340c4c22e68d4714069101f4bfbae1ef496191868e2a656b0f5371c39bc65",
      "duration": 3.7,
      "sampleRate": 24000,
      "sourceFile": "murcielago-112075.mp3",
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      "layers": [
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        {
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          "rev": 0.9,
          "sourceStart": 44.6,
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      ],
      "title": "Lambo idle and rev.mp3",
      "author": "cheesepuff",
      "sourceVehicle": "Lamborghini Murciélago LP 670 SuperVeloce V12",
      "sourceFamily": "V12",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/cheesepuff/sounds/112075/",
      "downloadUrl": "https://cdn.freesound.org/previews/112/112075_682033-hq.mp3",
      "provenance": "Author identifies their own Lamborghini-dealer video; tags identify Murciélago LP-670 SuperVeloce and V12. Public HQ MP3 preview. Final loud rev around 60 seconds excluded.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Modern V12 family proxy for Zonda C12, GMA T.50 and Enzo. Veyron uses a deliberately lower, darker multi-cylinder proxy; this is not a W16 recording.",
      "cars": [
        "pagani-zonda-c12",
        "bugatti-veyron",
        "gma-t50",
        "ferrari-enzo"
      ]
    },
    {
      "id": "ferrari-classic-v12",
      "file": "ferrari-classic-v12-v1.wav",
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      "sha256": "f0277a95ac71c70a2f8e58423b0837efb8ed779b6aa8ac7569264e4cd5bf3c62",
      "duration": 3.75,
      "sampleRate": 24000,
      "sourceFile": "ferrari-v12-43483.mp3",
      "sourceSha256": "99613b1bcd85cae1b84e661adcf7807797ef18604ad096d6a6644e008d36589a",
      "layers": [
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        {
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        {
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          "sourceStart": 3.3,
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      ],
      "title": "ferrari340america2.mp3",
      "author": "enginemusic",
      "sourceVehicle": "Ferrari 340 America 4-litre V12",
      "sourceFamily": "V12",
      "license": "CC-BY-3.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
      "sourceUrl": "https://freesound.org/people/enginemusic/sounds/43483/",
      "downloadUrl": "https://cdn.freesound.org/previews/43/43483_462458-hq.mp3",
      "provenance": "Recorded around 1997 at RPM Motorsports in Vergennes, Vermont; Sony D8 DAT and Audio-Technica ATM10. Public HQ MP3 preview, not original master.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Ferrari 340 America V12 proxy retained only for Lamborghini Countach LP500S. Not a Countach recording; recorded vehicle and current assignment remain distinct.",
      "cars": [
        "lamborghini-countach-lp500s"
      ]
    },
    {
      "id": "honda-na-i4",
      "file": "honda-na-i4-v1.wav",
      "bytes": 172844,
      "sha256": "1409b1b5a04bb8425904b6235c99e96192d5e174f9d03a6ea8994232ba01b877",
      "duration": 3.6,
      "sampleRate": 24000,
      "sourceFile": "honda-f20c.ogg",
      "sourceSha256": "aed190fa3717cdc922809da0b4a2b4d0eb11c505e3457bd0cc9b5d175025f7c2",
      "layers": [
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        {
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      ],
      "title": "2002-Honda-F20C.ogg",
      "author": "Tyler Riddle",
      "sourceVehicle": "2002 Honda F20C naturally aspirated inline-four",
      "sourceFamily": "I4",
      "license": "CC-BY-3.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
      "sourceUrl": "https://commons.wikimedia.org/wiki/File:2002-Honda-F20C.ogg",
      "downloadUrl": "https://upload.wikimedia.org/wikipedia/commons/0/0d/2002-Honda-F20C.ogg",
      "provenance": "Uploader-owned recording with an Audio-Technica Proformance P735 in the engine bay, M-Audio FastTrack at 48 kHz/24-bit and REAPER. Derived from original published Ogg Vorbis file.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Unassigned legacy Honda F20C proxy retained for reproduction of prior mixes. No current car assignment; not a Lotus or Toyota recording.",
      "cars": []
    },
    {
      "id": "audi-turbo-i4",
      "file": "audi-turbo-i4-v1.wav",
      "bytes": 180044,
      "sha256": "8b5ebae44162a50773d74085f808d7e10655bca3ed8e22d1a7c2c04c603d3047",
      "duration": 3.75,
      "sampleRate": 24000,
      "sourceFile": "audi-i4-425384.mp3",
      "sourceSha256": "98a787c614a45154d7145dc47d4c9e9b377a6a6249e95920fedb15ed785639b4",
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          "rev": 0.95,
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          "sourceDuration": 1.35
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      ],
      "title": "audi a4 allroad 20TFSI engine rpm ramp fast mono.wav",
      "author": "Soundholder",
      "sourceVehicle": "Audi A4 Allroad 2.0 TFSI turbo inline-four",
      "sourceFamily": "turbo-I4",
      "license": "CC-BY-3.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
      "sourceUrl": "https://freesound.org/people/Soundholder/sounds/425384/",
      "downloadUrl": "https://cdn.freesound.org/previews/425/425384_4421503-hq.mp3",
      "provenance": "Engine RPM ramp from the author Soundholder vehicle library free sample. Public HQ MP3 preview.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Small turbo-engine texture proxy for BMW i8 (actual turbo inline-three hybrid) and Porsche 919 (actual turbo V4 hybrid), alongside original hybrid synthesis. Neither cylinder arrangement is asserted to match.",
      "cars": [
        "bmw-i8",
        "porsche-919-hybrid"
      ]
    },
    {
      "id": "volvo-turbo-i5",
      "file": "volvo-turbo-i5-v1.wav",
      "bytes": 124844,
      "sha256": "570a64d32b1647a0cb770609b96fea8ff5b967ff70a49e49bdbb2c11adbd90dc",
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      "sampleRate": 24000,
      "sourceFile": "volvo-i5-95838.mp3",
      "sourceSha256": "c5c31b5277b30b40a024d1f1714a21aac3e944efd67deeed52380feeb24cfeb6",
      "layers": [
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        {
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          "end": 2.6,
          "rev": 0.8,
          "sourceStart": 20,
          "sourceDuration": 1.3
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      ],
      "title": "RG Volvo Engine.wav",
      "author": "cmusounddesign",
      "sourceVehicle": "Volvo 2.4 turbo inline-five",
      "sourceFamily": "turbo-I5",
      "license": "CC-BY-4.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
      "sourceUrl": "https://freesound.org/people/cmusounddesign/sounds/95838/",
      "downloadUrl": "https://cdn.freesound.org/previews/95/95838_1059930-hq.mp3",
      "provenance": "Source states 2.4 five-cylinder turbo engine, underhood microphone suspended about eight inches above turbocharger heat shield. Public HQ MP3 preview.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Turbo five-cylinder family proxy for Audi Quattro rally; source is a Volvo road engine, not an Audi rally recording.",
      "cars": [
        "audi-quattro-rally"
      ]
    },
    {
      "id": "mercedes-i6",
      "file": "mercedes-i6-v1.wav",
      "bytes": 148892,
      "sha256": "39f4949d192af45fb43cd8d2a518bb56bc03ec0513cf2d7cedd5f8cb2d0c4291",
      "duration": 3.101,
      "sampleRate": 24000,
      "sourceFile": "mercedes-i6-433603.mp3",
      "sourceSha256": "1550dca7026fecd9e3df0812d2889fd26706eec949bfce1e0661f9f5b8391c45",
      "layers": [
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          "rev": 0.95,
          "sourceStart": 2.7,
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      ],
      "title": "EXTERIOR - 1995 MERCEDES E320 FULL THROTTLE PASS BY R-L.wav",
      "author": "douglasbruce@look.ca",
      "sourceVehicle": "1995 Mercedes E320 inline-six",
      "sourceFamily": "I6",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/douglasbruce@look.ca/sounds/433603/",
      "downloadUrl": "https://cdn.freesound.org/previews/433/433603_7581660-hq.mp3",
      "provenance": "Exterior full-throttle high-speed pass of a 1995 Mercedes E320. Public HQ MP3 preview. Edited pass-by bands retain some exterior motion/road texture; this is not a stationary RPM sweep.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Inline-six family proxy for BMW M3 E46. Recording layer fades away at standstill because this is a driving take.",
      "cars": [
        "bmw-m3-e46"
      ]
    },
    {
      "id": "chevrolet-v6",
      "file": "chevrolet-v6-v1.wav",
      "bytes": 180044,
      "sha256": "d58a1209610af66e47f05fbb714eca3a189d6261a8c36faa87cd7907dd794b86",
      "duration": 3.75,
      "sampleRate": 24000,
      "sourceFile": "chevy-v6-351962.mp3",
      "sourceSha256": "f17b35c0c7ea84f1064ce5eb12219b348252de26cc046cb6a5dcbcdc4be232d7",
      "layers": [
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          "rev": 0.95,
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      ],
      "title": "CarV6AcceleratingInsideCabin.wav",
      "author": "CLaforet",
      "sourceVehicle": "Chevrolet Traverse V6",
      "sourceFamily": "V6",
      "license": "CC-BY-4.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
      "sourceUrl": "https://freesound.org/people/CLaforet/sounds/351962/",
      "downloadUrl": "https://cdn.freesound.org/previews/351/351962_2384040-hq.mp3",
      "provenance": "Recorded in the cabin with a Tascam DR-40 during hard acceleration. Public HQ MP3 preview. Silence separators between takes are excluded.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Unassigned legacy V6 proxy retained for reproducing earlier mixes. Previously assigned to Nissan GT-R; the current GT-R uses a documented 2012 R35 recording.",
      "cars": []
    },
    {
      "id": "bmw-diesel",
      "file": "bmw-diesel-v1.wav",
      "bytes": 172844,
      "sha256": "4726aa629b76f78e39d7629fd590553767c78a09df7c11cd3e8acd908149a8b4",
      "duration": 3.6,
      "sampleRate": 24000,
      "sourceFile": "diesel-401550.mp3",
      "sourceSha256": "c29188142340e0f0eb0f51efac641736ce6944d36b4867e2cb5d9747054810e8",
      "layers": [
        {
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          "rev": 0.1,
          "sourceStart": 0.3,
          "sourceDuration": 1.3
        },
        {
          "start": 1.2,
          "end": 2.4,
          "rev": 0.55,
          "sourceStart": 0.3,
          "sourceDuration": 1.3,
          "sourceFile": "diesel-401547.mp3"
        },
        {
          "start": 2.4,
          "end": 3.6,
          "rev": 0.95,
          "sourceStart": 0.25,
          "sourceDuration": 1.3,
          "sourceFile": "diesel-401549.mp3"
        }
      ],
      "title": "SFX_Car_Engine_Inside_Idle.wav",
      "author": "GiocoSound",
      "sourceVehicle": "BMW 120d diesel inline-four",
      "sourceFamily": "diesel-I4",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/GiocoSound/sounds/401550/",
      "downloadUrl": "https://cdn.freesound.org/previews/401/401550_5820033-hq.mp3",
      "provenance": "Three cabin recordings (idle, medium and high RPM), Earthworks QTC30 and Oktava MK-012-01. Public HQ MP3 previews.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Diesel texture proxy for Audi R18, whose V6 race diesel/hybrid is not represented by an exact recording.",
      "cars": [
        "audi-r18"
      ],
      "additionalSources": [
        {
          "title": "SFX_Car_Engine_Inside_RPMMed.wav",
          "author": "GiocoSound",
          "sourceFile": "diesel-401547.mp3",
          "sourceSha256": "9f2595faabe5ebcb5a97f900c79b86dc3728c224eff97f3f8223d087faf403f6",
          "sourceUrl": "https://freesound.org/people/GiocoSound/sounds/401547/",
          "downloadUrl": "https://cdn.freesound.org/previews/401/401547_5820033-hq.mp3",
          "license": "CC0-1.0",
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/"
        },
        {
          "title": "SFX_Car_Engine_Inside_RPMHigh.wav",
          "author": "GiocoSound",
          "sourceFile": "diesel-401549.mp3",
          "sourceSha256": "36fb4db368aa4330877707bb4b4970a6f7c7d51a2dc8f9bd3c75d931239822ff",
          "sourceUrl": "https://freesound.org/people/GiocoSound/sounds/401549/",
          "downloadUrl": "https://cdn.freesound.org/previews/401/401549_5820033-hq.mp3",
          "license": "CC0-1.0",
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/"
        }
      ]
    },
    {
      "id": "tesla-electric",
      "file": "tesla-electric-v1.wav",
      "bytes": 144188,
      "sha256": "bba167ef041df8ffc4f2569c706ac2202ba355960c3693fc93b441e07ca30e82",
      "duration": 3.003,
      "sampleRate": 24000,
      "sourceFile": "tesla-761685.mp3",
      "sourceSha256": "829df9ee2a528c982765c6955a6da60256b27c5806af28ca0359da194c94fe0b",
      "layers": [
        {
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          "sourceStart": 0.25,
          "sourceDuration": 1.1
        },
        {
          "start": 1.001,
          "end": 2.002,
          "rev": 0.55,
          "sourceStart": 1.9,
          "sourceDuration": 1.1
        },
        {
          "start": 2.002,
          "end": 3.003,
          "rev": 0.95,
          "sourceStart": 3.65,
          "sourceDuration": 1.1
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      ],
      "title": "Acceleration of an electric car",
      "author": "justVova",
      "sourceVehicle": "Tesla Model S Plaid electric",
      "sourceFamily": "electric",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/justVova/sounds/761685/",
      "downloadUrl": "https://cdn.freesound.org/previews/761/761685_13088347-hq.mp3",
      "provenance": "Source identifies full-throttle Tesla Model S Plaid acceleration. Public HQ MP3 preview contains the combined recorded electric-car motor/road sound, not an isolated laboratory motor stem.",
      "checked": "2026-10-02",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Electric-car family proxy for Rimac Concept One and Nevera. No Tesla-to-Rimac or exact motor/AVAS authenticity claim; recording fades to zero at standstill.",
      "cars": [
        "rimac-concept-one",
        "rimac-nevera"
      ]
    },
    {
      "id": "maserati-granturismo-v8",
      "file": "maserati-granturismo-v8-v1.wav",
      "bytes": 180044,
      "sha256": "0761ec7af87dd503f84fe8c0a1aa1c1450ec17937b100e3c25ec91dbb3c427f6",
      "duration": 3.75,
      "sampleRate": 24000,
      "sourceFile": "maserati-465453.mp3",
      "sourceSha256": "4c7e4b68b00629eccec9763c14d7e9b80a437c245ea4afb9427d6720bb55a597",
      "layers": [
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          "end": 1.25,
          "rev": 0.1,
          "sourceStart": 3.5,
          "sourceDuration": 1.35
        },
        {
          "start": 1.25,
          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 26,
          "sourceDuration": 1.35
        },
        {
          "start": 2.5,
          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 44,
          "sourceDuration": 1.35
        }
      ],
      "title": "Maserati GranTurismo S",
      "author": "lmartins",
      "sourceVehicle": "Maserati GranTurismo S V8",
      "license": "CC-BY-4.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
      "sourceUrl": "https://freesound.org/people/lmartins/sounds/465453/",
      "downloadUrl": "https://cdn.freesound.org/previews/465/465453_113-hq.mp3",
      "provenance": "Author identifies a Maserati GranTurismo S V8 starting, revving and idling. Public HQ MP3 preview; original source is a 64 kbps M4A, so the preview does not restore lost recording detail. Selected intervals exclude the initial start and isolated wideband transients.",
      "cars": [
        "maserati-mc-stradale"
      ],
      "use": "GranTurismo family proxy: the source is a GranTurismo S, not an MC Stradale recording. Three authored rev bands replace the unrelated 1985 Mustang idle-only texture. No measured source RPM is asserted.",
      "checked": "2026-10-03",
      "sourceFamily": "v8",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured."
    },
    {
      "id": "mercedes-amg-v8",
      "file": "mercedes-amg-v8-v1.wav",
      "bytes": 133436,
      "sha256": "b40f815871a80f1f659eee1716b7b58eee9d01ea933ae7cb3e9a1ab6c1e31786",
      "duration": 2.779,
      "sampleRate": 24000,
      "sourceFile": "amg-505321.mp3",
      "sourceSha256": "28c1a811eaebfd53fb7e77f272105e78b4056e905a1d38e7a0951590f1e66a85",
      "layers": [
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          "rev": 0.1,
          "sourceStart": 4.85,
          "sourceDuration": 1.15
        },
        {
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          "end": 1.778,
          "rev": 0.55,
          "sourceStart": 1.05,
          "sourceDuration": 0.8
        },
        {
          "start": 1.778,
          "end": 2.779,
          "rev": 0.95,
          "sourceStart": 2.35,
          "sourceDuration": 1.1
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      ],
      "title": "S63 AMG V8 Engine Revs",
      "author": "marcelweiss",
      "sourceVehicle": "Mercedes-Benz S63 AMG Coupé V8 BiTurbo",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/marcelweiss/sounds/505321/",
      "downloadUrl": "https://cdn.freesound.org/previews/505/505321_7236652-hq.mp3",
      "provenance": "Author identifies a stationary Mercedes-Benz S63 AMG Coupe revving its V8 BiTurbo in a Munich car park. Public HQ MP3 preview. Selected intervals avoid the wideband rev transients; source year and engine code are unspecified.",
      "cars": [],
      "use": "Unassigned legacy AMG bi-turbo V8 proxy retained for reproducing earlier mixes. Source is S63 AMG Coupé; the current AMG GT uses a documented GT R recording. This was the earlier replacement for Mustang idle.",
      "checked": "2026-10-03",
      "sourceFamily": "v8",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured."
    },
    {
      "id": "mclaren-570s-2016",
      "sourceFile": "McLaren_570S_t10_Onbrd_Fast_Various_Exhaust_Right_DPA4062.wav",
      "sourceSha256": "c87f6dfd5792a9736d1abb11136eb6d31b895e0135553f4ad36772933f28d4f8",
      "sourceBytes": 51465586,
      "layers": [
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          "sourceStart": 51.4,
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          "rev": 0.55,
          "sourceStart": 17.2,
          "sourceDuration": 1.35
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        {
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          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 151.2,
          "sourceDuration": 1.35
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      ],
      "title": "McLaren_570S_t10_Onbrd_Fast_Various_Exhaust_Right_DPA4062.wav",
      "author": "Pole Position Production",
      "sourceVehicle": "2016 McLaren 570S Coupé V8 biturbo",
      "sourceYear": 2016,
      "sourceFamily": "turbo-V8",
      "license": "Sonniss-GDC-2026-v2",
      "licenseUrl": "https://sonniss.com/gdc-bundle-license/",
      "sourceUrl": "https://sonniss.com/gameaudiogdc/",
      "downloadUrl": "https://ftpmirror.your.org/pub/misc/sonniss2020/individual/Pole%20Position%20-%20McLaren%20570S%202016/McLaren_570S_t10_Onbrd_Fast_Various_Exhaust_Right_DPA4062.wav",
      "productUrl": "https://pole.se/product/mclaren-570s-2016/",
      "bundle": "Sonniss GDC 2020",
      "bundleTracklistUrl": "https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit",
      "provenance": "Original 96 kHz/24-bit studio WAV from the individually extracted GDC bundle, matched by filename to Sonniss official 2020 tracklist and by embedded Pole Position copyright and vehicle metadata. Onboard exhaust-right DPA4062. The accompanying session photo depicts a 570S Coupé. Recorded source year is the vehicle model year from the product library, not the recording date.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "mclaren-570s",
        "mclaren-senna",
        "mclaren-p1-gtr",
        "mclaren-650s-gt3"
      ],
      "use": "Model and Coupé match for the 570S; visual source does not state model year. Related McLaren twin-turbo V8 proxy for Senna, P1 GTR and 650S GT3, not recordings of those models or the P1 hybrid system. Rev bands are authored, not measured RPM.",
      "rights": "Licensed for synchronization in this game, including commercial release; not licensed for redistribution as a sound-effect asset pack, template or SDK. Raw takes are not shipped; these modified loops retain the source license restrictions. No AI training. Attribution is optional.",
      "kind": "combustion",
      "file": "mclaren-570s-2016-v1.wav",
      "bytes": 180044,
      "sha256": "93653a343e888cde523202c5feeed5713b74f9c2ace921c6f1662c298f55fd02",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "aventador-2014",
      "sourceFile": "lamborghini_aventador_t14_onbrd_start_drive_ramps_stop_off_exhaust_right_DPA4062.wav",
      "sourceSha256": "92986d10dd09f45cda5b57cca3805387e25c7235154741234f1aed60a5355a54",
      "sourceBytes": 153148216,
      "layers": [
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        {
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          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 59.4,
          "sourceDuration": 1.35
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          "rev": 0.95,
          "sourceStart": 220.4,
          "sourceDuration": 1.35
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      ],
      "title": "lamborghini_aventador_t14_onbrd_start_drive_ramps_stop_off_exhaust_right_DPA4062.wav",
      "author": "Pole Position Production",
      "sourceVehicle": "2014 Lamborghini Aventador V12",
      "sourceYear": 2014,
      "sourceFamily": "V12",
      "license": "Sonniss-GDC-2026-v2",
      "licenseUrl": "https://sonniss.com/gdc-bundle-license/",
      "sourceUrl": "https://sonniss.com/gameaudiogdc/",
      "downloadUrl": "https://ftpmirror.your.org/pub/misc/sonniss2020/individual/Pole%20Position%20-%20Lamborghini%20Aventador%202014/lamborghini_aventador_t14_onbrd_start_drive_ramps_stop_off_exhaust_right_DPA4062.wav",
      "productUrl": "https://pole.se/product/lamborghini-aventador-2014/",
      "bundle": "Sonniss GDC 2020",
      "bundleTracklistUrl": "https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit",
      "provenance": "Original 96 kHz/24-bit studio WAV from the individually extracted GDC bundle, matched by filename to Sonniss official 2020 tracklist and by embedded Pole Position copyright and vehicle metadata. Onboard exhaust-right DPA4062, drive ramps. Recorded source year is the vehicle model year from the product library, not the recording date.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "lamborghini-aventador"
      ],
      "use": "Aventador model recording replaces Murciélago proxy. The game visual source does not specify year/trim; exact year/variant remains unverified. Rev bands are authored, not measured RPM.",
      "rights": "Licensed for synchronization in this game, including commercial release; not licensed for redistribution as a sound-effect asset pack, template or SDK. Raw takes are not shipped; these modified loops retain the source license restrictions. No AI training. Attribution is optional.",
      "kind": "combustion",
      "file": "aventador-2014-v1.wav",
      "bytes": 180044,
      "sha256": "7cc45db7fe82b11a5202df7a9adcf8a9f5ae6f0eba67a5b8f4bee00d02fe6c7e",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "ferrari-458-2013",
      "sourceFile": "ferrari_458_t8_onbrd_drive_ramps_stop_off_intake_left_DPA4062.wav",
      "sourceSha256": "e25aa4c6ff8662dd7f0b738358061893da726ecef1f4a3d53070833f598e1b52",
      "sourceBytes": 105302778,
      "layers": [
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          "rev": 0.1,
          "sourceStart": 77.4,
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          "rev": 0.55,
          "sourceStart": 89,
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        {
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          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 98.2,
          "sourceDuration": 1.35
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      ],
      "title": "ferrari_458_t8_onbrd_drive_ramps_stop_off_intake_left_DPA4062.wav",
      "author": "Pole Position Production",
      "sourceVehicle": "2013 Ferrari 458 V8 (body variant not verified)",
      "sourceYear": 2013,
      "sourceFamily": "V8",
      "license": "Sonniss-GDC-2026-v2",
      "licenseUrl": "https://sonniss.com/gdc-bundle-license/",
      "sourceUrl": "https://sonniss.com/gameaudiogdc/",
      "downloadUrl": "https://ftpmirror.your.org/pub/misc/sonniss2020/individual/Pole%20Position%20-%20Ferrari%20458%202013/ferrari_458_t8_onbrd_drive_ramps_stop_off_intake_left_DPA4062.wav",
      "productUrl": "https://sonniss.com/sound-effects/ferrari-458-2013/",
      "bundle": "Sonniss GDC 2020",
      "bundleTracklistUrl": "https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit",
      "provenance": "Original 96 kHz/24-bit studio WAV from the individually extracted GDC bundle, matched by filename to Sonniss official 2020 tracklist and by embedded Pole Position copyright and vehicle metadata. Onboard intake-left DPA4062, drive ramps; original session metadata dated 2017-12-20. Recorded source year is the vehicle model year from the product library, not the recording date.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "ferrari-458-italia"
      ],
      "use": "458 model-family recording replaces the 355 proxy. Game asset is a 458 Spider; the recording identifies 458 without certifying Spider, and embedded artwork depicts a coupé. Do not claim exact Spider or conflate this original take with the separately sold straight-pipes session.",
      "rights": "Licensed for synchronization in this game, including commercial release; not licensed for redistribution as a sound-effect asset pack, template or SDK. Raw takes are not shipped; these modified loops retain the source license restrictions. No AI training. Attribution is optional.",
      "kind": "combustion",
      "file": "ferrari-458-2013-v1.wav",
      "bytes": 180044,
      "sha256": "ae5b664785b2f3120ce833675e7ca2e0116bf5596bb87e068e34244d98d0d184",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "audi-r8-2017",
      "sourceFile": "Audi, R8, t3, Onbrd, Start, Fast, Drive, Stop, Reverse, Stop, Drive, Engine, Right, DPA4061.wav",
      "sourceSha256": "272bca969591b5e882fb588ab67314ce88790f80eb74f3d986975c65d434bdd6",
      "sourceBytes": 41431300,
      "layers": [
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          "sourceStart": 6.6,
          "sourceDuration": 1.35
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        {
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          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 52,
          "sourceDuration": 1.35
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        {
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          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 105.4,
          "sourceDuration": 1.35
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      ],
      "title": "Audi, R8, t3, Onbrd, Start, Fast, Drive, Stop, Reverse, Stop, Drive, Engine, Right, DPA4061.wav",
      "author": "Pole Position Production",
      "sourceVehicle": "2017 Audi R8 FSI 5.2 V10",
      "sourceYear": 2017,
      "sourceFamily": "V10",
      "license": "Sonniss-GDC-2026-v2",
      "licenseUrl": "https://sonniss.com/gdc-bundle-license/",
      "sourceUrl": "https://sonniss.com/gameaudiogdc/",
      "downloadUrl": "https://ftpmirror.your.org/pub/misc/sonniss2020/individual/Pole%20Position%20-%20Audi%20R8%202017/Audi%2C%20R8%2C%20t3%2C%20Onbrd%2C%20Start%2C%20Fast%2C%20Drive%2C%20Stop%2C%20Reverse%2C%20Stop%2C%20Drive%2C%20Engine%2C%20Right%2C%20DPA4061.wav",
      "productUrl": "https://pole.se/product/audi-r8-2017/",
      "bundle": "Sonniss GDC 2020",
      "bundleTracklistUrl": "https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit",
      "provenance": "Original 96 kHz/24-bit studio WAV from the individually extracted GDC bundle, matched by filename to Sonniss official 2020 tracklist and by embedded Pole Position copyright and vehicle metadata. Onboard engine-right DPA4061, start and drive; selected intervals exclude the starter. Recorded source year is the vehicle model year from the product library, not the recording date.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "audi-r8",
        "audi-r8-lms-gt3"
      ],
      "use": "R8 road-model recording replaces Huracán proxy for R8 Custom; custom build/generation remains undocumented. Related road R8 variant proxy for the 2019 R8 LMS GT3, not the race-car recording.",
      "rights": "Licensed for synchronization in this game, including commercial release; not licensed for redistribution as a sound-effect asset pack, template or SDK. Raw takes are not shipped; these modified loops retain the source license restrictions. No AI training. Attribution is optional.",
      "kind": "combustion",
      "file": "audi-r8-2017-v1.wav",
      "bytes": 180044,
      "sha256": "534b2681939b366b5bdbb1db777c78c70664ad1b119750424cdbc315c38d84fa",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "nissan-gtr-2012",
      "sourceFile": "Nissan_GTR_t6_Onbrd_Drive_Ramps_Engine_Left_Valve_DPA4062.wav",
      "sourceSha256": "aa06a7caaf09eeaf548ec31e72f72e2538a04c6a004305fa15d6dc68676bb6a6",
      "sourceBytes": 105444896,
      "layers": [
        {
          "start": 0,
          "end": 1.25,
          "rev": 0.1,
          "sourceStart": 0.8,
          "sourceDuration": 1.35
        },
        {
          "start": 1.25,
          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 91.4,
          "sourceDuration": 1.35
        },
        {
          "start": 2.5,
          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 209,
          "sourceDuration": 1.35
        }
      ],
      "title": "Nissan_GTR_t6_Onbrd_Drive_Ramps_Engine_Left_Valve_DPA4062.wav",
      "author": "Pole Position Production",
      "sourceVehicle": "2012 Nissan GT-R R35 turbo V6, modified performance exhaust",
      "sourceYear": 2012,
      "sourceFamily": "turbo-V6",
      "license": "Sonniss-GDC-2026-v2",
      "licenseUrl": "https://sonniss.com/gdc-bundle-license/",
      "sourceUrl": "https://sonniss.com/gameaudiogdc/",
      "downloadUrl": "https://ftpmirror.your.org/pub/misc/sonniss2020/individual/Pole%20Position%20-%20Nissan%20GT-R%20R35%202012/Nissan_GTR_t6_Onbrd_Drive_Ramps_Engine_Left_Valve_DPA4062.wav",
      "productUrl": "https://pole.se/product/nissan-gt-r-r35-2012/",
      "bundle": "Sonniss GDC 2020",
      "bundleTracklistUrl": "https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit",
      "provenance": "Original 96 kHz/24-bit studio WAV from the individually extracted GDC bundle, matched by filename to Sonniss official 2020 tracklist and by embedded Pole Position copyright and vehicle metadata. Onboard engine left/valve DPA4062, drive ramps. Recorded source year is the vehicle model year from the product library, not the recording date.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "nissan-gt-r-2018"
      ],
      "use": "R35 model/generation recording replaces Chevrolet Traverse proxy; source is 2012, not the represented 2018 model year. Rev bands are authored, not measured RPM. The source vehicle has a modified performance exhaust, not a verified factory 2018 exhaust.",
      "rights": "Licensed for synchronization in this game, including commercial release; not licensed for redistribution as a sound-effect asset pack, template or SDK. Raw takes are not shipped; these modified loops retain the source license restrictions. No AI training. Attribution is optional.",
      "kind": "combustion",
      "file": "nissan-gtr-2012-v1.wav",
      "bytes": 180044,
      "sha256": "1f0a09a6e0edb23ec1f90923c9b653773b182654215a7b21a06e156533fe158d",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "mercedes-amg-gtr-2018",
      "sourceFile": "mercedes_amg_gtr_t13_onbrd_start_fast_drive_stop_off_interior_DPA4021.wav",
      "sourceSha256": "3b837d9b394d6db98272925541942acfbebe016f801a4fc5637a7a58e6219c74",
      "sourceBytes": 46553958,
      "layers": [
        {
          "start": 0,
          "end": 1.25,
          "rev": 0.1,
          "sourceStart": 1.7,
          "sourceDuration": 1.35
        },
        {
          "start": 1.25,
          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 27.4,
          "sourceDuration": 1.35
        },
        {
          "start": 2.5,
          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 35.2,
          "sourceDuration": 1.35
        }
      ],
      "title": "mercedes_amg_gtr_t13_onbrd_start_fast_drive_stop_off_interior_DPA4021.wav",
      "author": "Pole Position Production",
      "sourceVehicle": "2018 Mercedes-AMG GT R twin-turbo V8",
      "sourceYear": 2018,
      "sourceFamily": "turbo-V8",
      "license": "Sonniss-GDC-2026-v2",
      "licenseUrl": "https://sonniss.com/gdc-bundle-license/",
      "sourceUrl": "https://sonniss.com/gameaudiogdc/",
      "downloadUrl": "https://ftpmirror.your.org/pub/misc/sonniss2019/individual/Pole%20Position%20-%20Mercedes%20AMG%20GT%20R%202018/mercedes_amg_gtr_t13_onbrd_start_fast_drive_stop_off_interior_DPA4021.wav",
      "productUrl": "https://pole.se/product/mercedes-amg-gt-r-2018/",
      "bundle": "Sonniss GDC 2019",
      "bundleTracklistUrl": "https://docs.google.com/spreadsheets/d/1-McgwdktLVmctBrI4OGbgIBxeCp0A4KyKJzxOOTP6FY/edit",
      "provenance": "Original 96 kHz/24-bit studio WAV from the individually extracted GDC2019 bundle, filename matched to the official Sonniss tracklist. Embedded metadata identifies Pole Position Production, Mercedes AMG GTR onboard start/fast drive/stop and interior DPA4021. Selected intervals exclude the starter and stop.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "mercedes-amg-gt"
      ],
      "use": "AMG GT R variant recording replaces the S63 AMG proxy. The game represents AMG GT without the R trim; this remains a documented variant proxy. Cabin/road texture remains; rev bands are authored, not measured RPM.",
      "rights": "Licensed for synchronization in this game, including commercial release; not licensed for redistribution as a sound-effect asset pack, template or SDK. Raw takes are not shipped; these modified loops retain the source license restrictions. No AI training. Attribution is optional.",
      "kind": "combustion",
      "file": "mercedes-amg-gtr-2018-v1.wav",
      "bytes": 180044,
      "sha256": "515ce61e4bd7417caa814ae6a81f744e03062b001b8f73df6332aa7658e7d820",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "testarossa-1990",
      "sourceFile": "Ferrari, Testarossa, t6, Onbrd, Start, Drive, Steady RPMs, Engine, Mix.wav",
      "sourceSha256": "afaaa1075fd9c86ce7d6417276c122366f380cc9f43d47c82ac845790cec20ab",
      "sourceBytes": 119157522,
      "layers": [
        {
          "start": 0,
          "end": 1.25,
          "rev": 0.1,
          "sourceStart": 12,
          "sourceDuration": 1.35
        },
        {
          "start": 1.25,
          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 51,
          "sourceDuration": 1.35
        },
        {
          "start": 2.5,
          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 120,
          "sourceDuration": 1.35
        }
      ],
      "title": "Ferrari, Testarossa, t6, Onbrd, Start, Drive, Steady RPMs, Engine, Mix.wav",
      "author": "Pole Position Production",
      "sourceVehicle": "1990 Ferrari Testarossa flat-12",
      "sourceYear": 1990,
      "sourceFamily": "flat-12",
      "license": "Sonniss-GDC-2026-v2",
      "licenseUrl": "https://sonniss.com/gdc-bundle-license/",
      "sourceUrl": "https://sonniss.com/gameaudiogdc/",
      "downloadUrl": "https://scrubby.duckdns.org/Sonniss.com%20-%20GDC%202023%20-%20Game%20Audio%20Bundle/Pole%20Position%20Production%20-%20Ferrari%20Testarossa%201990/Ferrari%2C%20Testarossa%2C%20t6%2C%20Onbrd%2C%20Start%2C%20Drive%2C%20Steady%20RPMs%2C%20Engine%2C%20Mix.wav",
      "productUrl": "https://pole.se/product/ferrari-testarossa-1990/",
      "bundle": "Sonniss GDC 2023",
      "bundleTracklistUrl": "https://docs.google.com/spreadsheets/d/1HAJdNA-QIug2IZjUV-DwCo1IZ-XJ4Vv9gWIaumNScfc/edit",
      "provenance": "Original 96 kHz/24-bit stereo engine-mix WAV from extracted GDC 2023 bundle. Exact filename and Ferrari Testarossa 1990 library matched to the official Sonniss 2023 tracklist. Embedded metadata identifies the Testarossa, Pole Position Production copyright 2020, and onboard start/drive/steady RPMs engine mix. Mirror is transport only; usage rights derive from the official Sonniss bundle license.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "cars": [
        "ferrari-testarossa"
      ],
      "use": "Testarossa model and flat-12 recording replaces the unrelated Ferrari 340 America V12 proxy. Source car is 1990; represented visual source does not state its year. Three steady source sections, authored rev-band labels and transitions, not measured RPM calibration.",
      "rights": "Licensed for synchronization in this game, including commercial release; not licensed for redistribution as a sound-effect asset pack, template or SDK. Raw takes are not shipped; these modified loops retain the source license restrictions. No AI training. Attribution is optional.",
      "kind": "combustion",
      "file": "testarossa-1990-v1.wav",
      "bytes": 180044,
      "sha256": "e0e5aec8e7445bfb4622e155020392247f1141dacbb2f58472344055dbaf94c0",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "lotus-elise",
      "sourceFile": "113205_137116-hq.mp3",
      "sourceSha256": "5ac3fb5a84bab3437ac097e864f9fe3e27e1dec26a54de0744c4455157b3b009",
      "sourceBytes": 1193280,
      "title": "Lotus Elise start rev idle.aif",
      "author": "victormalloy",
      "sourceVehicle": "Lotus Elise (generation and engine unspecified)",
      "sourceFamily": "I4",
      "license": "CC0-1.0",
      "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
      "sourceUrl": "https://freesound.org/people/victormalloy/sounds/113205/",
      "downloadUrl": "https://cdn.freesound.org/previews/113/113205_137116-hq.mp3",
      "provenance": "Recorder publication in the Automobiles collection describes 96 kHz recordings of luxury sports cars and names Lotus Elise. Published 30 January 2011 as a 51-second stereo 96 kHz/24-bit AIFF under CC0. Derived from the publisher-hosted public HQ MP3 preview; no account-only master downloaded. Neither source nor visual asset establishes generation, model year, engine or exhaust build.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Lotus Elise base-model recording replaces the unrelated Honda F20C proxy. Generation, engine and exhaust build remain unspecified. Short stationary rev sections retain source pitch movement; bands and transitions are authored, not measured RPM.",
      "cars": [
        "lotus-elise"
      ],
      "layers": [
        {
          "start": 0,
          "end": 1.25,
          "rev": 0.1,
          "sourceStart": 44.1,
          "sourceDuration": 1.35
        },
        {
          "start": 1.25,
          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 16.7,
          "sourceDuration": 1.35
        },
        {
          "start": 2.5,
          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 20,
          "sourceDuration": 1.35
        }
      ],
      "file": "lotus-elise-v1.wav",
      "bytes": 180044,
      "sha256": "3506585008cd734b47a0a7e6c2e664108ca4e915417fea2dcc31759364cdae2f",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "ferrari-250-gto",
      "sourceFile": "ferrari-250-gto-original.ogg",
      "sourceSha256": "8cf1408366105aa2a563b3b7e871d1d0ebcd91415c9696bf0e0488aab0030683",
      "sourceBytes": 564723,
      "title": "Ferrari 250 GTO, Engine Sound.ogg",
      "author": "Provo rossi",
      "sourceVehicle": "Ferrari 250 GTO (year and build unspecified)",
      "sourceFamily": "V12",
      "license": "CC-BY-4.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
      "sourceUrl": "https://commons.wikimedia.org/wiki/File:Ferrari_250_GTO,_Engine_Sound.ogg",
      "downloadUrl": "https://upload.wikimedia.org/wikipedia/commons/8/8a/Ferrari_250_GTO%2C_Engine_Sound.ogg",
      "provenance": "Commons original upload dated 1 August 2025 expressly declares own work by Provo rossi and CC BY 4.0. Published original Ogg is 59.882812 seconds, stereo 44.1 kHz; downloaded SHA-1 a773b1c1dcdc031c1b9249f26603543bce87b998 matches file-page metadata. Source does not identify year, chassis, microphone or exhaust build; no 1964 specification inferred. Container retains M4A encoder lineage, not independently verified original capture hardware.",
      "checked": "2026-10-03",
      "adaptation": "Mono 24 kHz PCM, 65 Hz high-pass / 5.8 kHz low-pass, selected source intervals, cosine loop overlap, DC/seam correction and peak/RMS normalization. In-game pitch, RPM blend and load EQ are authored, not measured.",
      "use": "Identified Ferrari 250 GTO source replaces Ferrari 340 America for the 1964 250 GTO. Source year/build is unspecified; not certified 1964. Three relatively steady running sections, not measured idle/load RPM bands. No other car is assigned this source.",
      "cars": [
        "ferrari-250-gto"
      ],
      "layers": [
        {
          "start": 0,
          "end": 1.25,
          "rev": 0.1,
          "sourceStart": 18.3,
          "sourceDuration": 1.35
        },
        {
          "start": 1.25,
          "end": 2.5,
          "rev": 0.55,
          "sourceStart": 30.5,
          "sourceDuration": 1.35
        },
        {
          "start": 2.5,
          "end": 3.75,
          "rev": 0.95,
          "sourceStart": 43.5,
          "sourceDuration": 1.35
        }
      ],
      "file": "ferrari-250-gto-v1.wav",
      "bytes": 180044,
      "sha256": "c57d4798ac7b909015dacea8e7c756a168bed2b8e6acb785a95cb4ca43734f4f",
      "duration": 3.75,
      "sampleRate": 24000
    },
    {
      "id": "gallardo-idle",
      "file": "gallardo-idle-v1.wav",
      "bytes": 60044,
      "sha256": "dbcecd6f1bb37631c2f3b7dbb3a2d21d92b94cacca954767285ba546c3f38dcf",
      "duration": 1.25,
      "sampleRate": 24000,
      "sourceFile": "gallardo-brett-levin-flickr-8464649517.mp4",
      "sourceSha256": "dc883ea35b4b52e33117d59537cf0ddeffc33bf2826ef0512ab2aa6641237ca0",
      "layers": [
        {
          "start": 0.0,
          "end": 1.25,
          "rev": 0.22,
          "sourceStart": 10.2,
          "sourceDuration": 1.35
        }
      ],
      "sourceBytes": 5084114,
      "title": "Lamborghini Gallardo Start Up",
      "author": "Brett Levin / Brett Levin Photography",
      "sourceVehicle": "Lamborghini Gallardo (year and trim unspecified)",
      "sourceFamily": "V10",
      "license": "CC-BY-2.0",
      "licenseUrl": "https://creativecommons.org/licenses/by/2.0/",
      "sourceUrl": "https://www.flickr.com/photos/scubabrett22/8464649517/",
      "downloadUrl": "https://www.flickr.com/photos/scubabrett22/8464649517/",
      "downloadUrlIsLandingPage": true,
      "downloadMethod": "Resolve the public video element from the source page for its signed Flickr appletv.mp4 transcode URL; the signature expires. No account or original-master access used.",
      "provenance": "Brett Levin Photography published the named Gallardo starting/revving video on Flickr on 11 February 2013. The item UI and primary metadata grant CC BY 2.0 (Flickr license id 4). Public 1280x720 MP4 transcode contains stereo 44.1 kHz AAC, duration 18.810458 seconds; not claimed as the camera original. Creator publication and grant support provenance without independent session corroboration. Source year, trim, microphone and engine/exhaust build are unspecified.",
      "checked": "2026-10-04",
      "adaptation": "Mono 24 kHz PCM16, 65 Hz high-pass / 5.8 kHz low-pass, source seconds 10.20–11.55, cosine loop overlap, DC/seam correction and peak/RMS normalization. Single idle layer; existing authored pitch/load response and high-rev attenuation retained.",
      "use": "Named Gallardo idle replaces the Huracan EVO Spyder proxy only for the Gallardo. Source year/trim/build unspecified; not certified as the represented 2004 specification. One steady idle excerpt, with the existing single-layer fade at high revs and authored synthesis providing dynamic engine response. User approved the supplied listening audition on 4 October 2026: Clean engine sound—use it.",
      "cars": [
        "lamborghini-gallardo"
      ]
    }
  ],
  "activeBanks": 22
}