Camber Reign — recorded engine texture sources Provenance and exact source intervals: ENGINE-SOURCES.json Derivative loop banks: engines/*.wav Original sources checked 2–4 October 2026; each manifest entry records its review date. The CC0 and CC BY entries below permit redistribution and adaptation under their listed terms. The separately marked Sonniss GDC entries are licensed for incorporation in this game and retain additional distribution restrictions. Each bank was modified by AppsOverFlow: selected source intervals, mono 24 kHz PCM16 conversion, 65 Hz high-pass / 5.8 kHz low-pass filtering, DC removal, cosine loop overlap, endpoint correction and amplitude normalization. Runtime pitch, rev bands, gain and load EQ are authored. Retain the relevant title, author, source, license and modification notice when redistributing a CC BY derivative. No recorder or manufacturer endorsement is implied. Freesound source previews are not original masters; Sonniss sources are the original studio WAVs. Raw studio takes and attached images are not shipped. ferrari-355-v1.wav Adapted from “ferrari355underhood4.mp3” by enginemusic. https://freesound.org/people/enginemusic/sounds/43484/ CC-BY-3.0: https://creativecommons.org/licenses/by/3.0/ https://creativecommons.org/licenses/by/3.0/legalcode Copyright 1997 as stated by enginemusic. 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. 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. porsche-911-v1.wav Adapted from “porsche_911.wav” by mharo. https://freesound.org/people/mharo/sounds/55727/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ Porsche 911 recorded in a Barcelona street. Public HQ MP3 preview of the WAV; no claim about engine generation or microphone position. Adapted proxy texture blended with original synthesis; not a recording of the represented game model. mustang-idle-v1.wav Adapted from “Ford Mustang Engine (1985).wav” by lmbubec. https://freesound.org/people/lmbubec/sounds/119449/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ Ford Mustang idling before engine shutdown. Public HQ MP3 preview; cylinder count is not asserted by the source description. Legacy idle-only proxy retained byte-for-byte for reproducibility. No current catalogue car selects this bank; GranTurismo and AMG V8 sources replace its previous assignments. aston-acceleration-v1.wav Adapted from “Acceleration Aston Martin” by Joseph SARDIN / BigSoundBank. https://bigsoundbank.com/acceleration-aston-martin-s0600.html CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ Outdoor acceleration recording, sound 0600. Source does not identify the model, cylinder count or recording microphone position. Adapted proxy texture blended with original synthesis; not a recording of the represented game model. huracan-v10-v1.wav Adapted from “Lamborghini Sounds” by JaimeLopes. https://freesound.org/people/JaimeLopes/sounds/564375/ CC-BY-4.0: https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode 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. Variant proxy for the game Huracán (variant unspecified). Source is an EVO Spyder; no same-year or same-variant claim. murcielago-v12-v1.wav Adapted from “Lambo idle and rev.mp3” by cheesepuff. https://freesound.org/people/cheesepuff/sounds/112075/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ 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. 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. ferrari-classic-v12-v1.wav Adapted from “ferrari340america2.mp3” by enginemusic. https://freesound.org/people/enginemusic/sounds/43483/ CC-BY-3.0: https://creativecommons.org/licenses/by/3.0/ https://creativecommons.org/licenses/by/3.0/legalcode Recorded around 1997 at RPM Motorsports in Vergennes, Vermont; Sony D8 DAT and Audio-Technica ATM10. Public HQ MP3 preview, not original master. Classic V12 family proxy for Countach LP500S only. Countach was not recorded in this source session. honda-na-i4-v1.wav Adapted from “2002-Honda-F20C.ogg” by Tyler Riddle. https://commons.wikimedia.org/wiki/File:2002-Honda-F20C.ogg CC-BY-3.0: https://creativecommons.org/licenses/by/3.0/ https://creativecommons.org/licenses/by/3.0/legalcode 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. Unassigned legacy Honda F20C proxy retained for reproduction of prior mixes; no current car assignment. Not a Lotus or Toyota recording. audi-turbo-i4-v1.wav Adapted from “audi a4 allroad 20TFSI engine rpm ramp fast mono.wav” by Soundholder. https://freesound.org/people/Soundholder/sounds/425384/ CC-BY-3.0: https://creativecommons.org/licenses/by/3.0/ https://creativecommons.org/licenses/by/3.0/legalcode Engine RPM ramp from the author Soundholder vehicle library free sample. Public HQ MP3 preview. 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. volvo-turbo-i5-v1.wav Adapted from “RG Volvo Engine.wav” by cmusounddesign. https://freesound.org/people/cmusounddesign/sounds/95838/ CC-BY-4.0: https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode Source states 2.4 five-cylinder turbo engine, underhood microphone suspended about eight inches above turbocharger heat shield. Public HQ MP3 preview. Turbo five-cylinder family proxy for Audi Quattro rally; source is a Volvo road engine, not an Audi rally recording. mercedes-i6-v1.wav Adapted from “EXTERIOR - 1995 MERCEDES E320 FULL THROTTLE PASS BY R-L.wav” by douglasbruce@look.ca. https://freesound.org/people/douglasbruce@look.ca/sounds/433603/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ 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. Inline-six family proxy for BMW M3 E46. Recording layer fades away at standstill because this is a driving take. chevrolet-v6-v1.wav Adapted from “CarV6AcceleratingInsideCabin.wav” by CLaforet. https://freesound.org/people/CLaforet/sounds/351962/ CC-BY-4.0: https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode Recorded in the cabin with a Tascam DR-40 during hard acceleration. Public HQ MP3 preview. Silence separators between takes are excluded. 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. bmw-diesel-v1.wav Adapted from “SFX_Car_Engine_Inside_Idle.wav” by GiocoSound. https://freesound.org/people/GiocoSound/sounds/401550/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ Three cabin recordings (idle, medium and high RPM), Earthworks QTC30 and Oktava MK-012-01. Public HQ MP3 previews. Diesel texture proxy for Audi R18, whose V6 race diesel/hybrid is not represented by an exact recording. Additional take: “SFX_Car_Engine_Inside_RPMMed.wav” by GiocoSound https://freesound.org/people/GiocoSound/sounds/401547/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ Additional take: “SFX_Car_Engine_Inside_RPMHigh.wav” by GiocoSound https://freesound.org/people/GiocoSound/sounds/401549/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ tesla-electric-v1.wav Adapted from “Acceleration of an electric car” by justVova. https://freesound.org/people/justVova/sounds/761685/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ 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. 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. All 33 game cars have a selected recorded texture. Family/model adaptation is explicit; recordings were not made of every exact game model. Electric Rimacs use an electric Tesla recording, never a combustion source. Veyron, i8, R18 and 919 retain disclosed engine-layout proxies; Testarossa now uses its own flat-12 model recording. Actual source RPM and microphone placement are stated only where documented. The original synthesis remains a fallback for blocked/failed decoding. Nitro, impact, tyre layers and the Liquid Lines lobby soundtrack remain original synthesis; Liquid Lines remains the only lobby music. maserati-granturismo-v8-v1.wav Adapted from “Maserati GranTurismo S” by lmartins. https://freesound.org/people/lmartins/sounds/465453/ CC-BY-4.0: https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode 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. 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. Modified by AppsOverFlow as described above. No author or manufacturer endorsement. mercedes-amg-v8-v1.wav Adapted from “S63 AMG V8 Engine Revs” by marcelweiss. https://freesound.org/people/marcelweiss/sounds/505321/ CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/ 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. 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. Modified by AppsOverFlow as described above. No author or manufacturer endorsement. Sonniss GDC studio recordings — game-incorporated use only ======================================================= Seven derivatives below use recordings by Pole Position Production from the Sonniss GDC 2019/2020/2023 free bundles. Current governing license (downloaded 3 October 2026): https://sonniss.com/gdc-bundle-license/ — version 2.0, effective27 August 2026. Commercial game synchronization and modifications are permitted. Do not distribute these recordings or edited loops as a standalone sound-effect library, asset pack, project template or SDK. No AI training. Attribution is not required; this notice preserves provenance and separate asset rights. The game source-code license does not relicense these sounds. Obtain the source bundle independently for other projects. Official bundle: https://sonniss.com/gameaudiogdc/ Modifications: AppsOverFlow, processing described at the top of this file. mclaren-570s-2016-v1.wav Recorded vehicle: 2016 McLaren 570S Coupé V8 biturbo Original take: McLaren_570S_t10_Onbrd_Fast_Various_Exhaust_Right_DPA4062.wav Pole Position Production — Sonniss GDC 2020 https://pole.se/product/mclaren-570s-2016/ https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit Sonniss GDC v2: https://sonniss.com/gdc-bundle-license/ 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. aventador-2014-v1.wav Recorded vehicle: 2014 Lamborghini Aventador V12 Original take: lamborghini_aventador_t14_onbrd_start_drive_ramps_stop_off_exhaust_right_DPA4062.wav Pole Position Production — Sonniss GDC 2020 https://pole.se/product/lamborghini-aventador-2014/ https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit Sonniss GDC v2: https://sonniss.com/gdc-bundle-license/ 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. ferrari-458-2013-v1.wav Recorded vehicle: 2013 Ferrari 458 V8 (body variant not verified) Original take: ferrari_458_t8_onbrd_drive_ramps_stop_off_intake_left_DPA4062.wav Pole Position Production — Sonniss GDC 2020 https://sonniss.com/sound-effects/ferrari-458-2013/ https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit Sonniss GDC v2: https://sonniss.com/gdc-bundle-license/ 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. audi-r8-2017-v1.wav Recorded vehicle: 2017 Audi R8 FSI 5.2 V10 Original take: Audi, R8, t3, Onbrd, Start, Fast, Drive, Stop, Reverse, Stop, Drive, Engine, Right, DPA4061.wav Pole Position Production — Sonniss GDC 2020 https://pole.se/product/audi-r8-2017/ https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit Sonniss GDC v2: https://sonniss.com/gdc-bundle-license/ 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. nissan-gtr-2012-v1.wav Recorded vehicle: 2012 Nissan GT-R R35 turbo V6, modified performance exhaust Original take: Nissan_GTR_t6_Onbrd_Drive_Ramps_Engine_Left_Valve_DPA4062.wav Pole Position Production — Sonniss GDC 2020 https://pole.se/product/nissan-gt-r-r35-2012/ https://docs.google.com/spreadsheets/d/1QqIcxJ7y0Acq3HAj9qQvFgvyeBjJ_7JvX8-GguUHIVk/edit Sonniss GDC v2: https://sonniss.com/gdc-bundle-license/ 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. mercedes-amg-gtr-2018-v1.wav Recorded vehicle: 2018 Mercedes-AMG GT R twin-turbo V8 Original take: mercedes_amg_gtr_t13_onbrd_start_fast_drive_stop_off_interior_DPA4021.wav Pole Position Production — Sonniss GDC 2019 https://pole.se/product/mercedes-amg-gt-r-2018/ https://docs.google.com/spreadsheets/d/1-McgwdktLVmctBrI4OGbgIBxeCp0A4KyKJzxOOTP6FY/edit Sonniss GDC v2: https://sonniss.com/gdc-bundle-license/ 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. testarossa-1990-v1.wav Recorded vehicle: 1990 Ferrari Testarossa flat-12 Original take: Ferrari, Testarossa, t6, Onbrd, Start, Drive, Steady RPMs, Engine, Mix.wav Pole Position Production — Sonniss GDC 2023 https://pole.se/product/ferrari-testarossa-1990/ https://docs.google.com/spreadsheets/d/1HAJdNA-QIug2IZjUV-DwCo1IZ-XJ4Vv9gWIaumNScfc/edit Sonniss GDC v2: https://sonniss.com/gdc-bundle-license/ 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. lotus-elise-v1.wav Recorded vehicle: Lotus Elise (generation and engine unspecified) Original title: Lotus Elise start rev idle.aif victormalloy — Freesound, published 30 January 2011 https://freesound.org/people/victormalloy/sounds/113205/ CC0 1.0: https://creativecommons.org/publicdomain/zero/1.0/ Adapted by Camber Reign from the publisher-hosted HQ MP3 preview: mono 24 kHz PCM, filtering, source interval selection, loop overlap, DC/seam correction and normalization. Actual Elise replaces unrelated Honda proxy. Source and target do not establish generation, model year, engine or exhaust build. Stationary rev sections retain pitch movement; in-game bands are authored, not measured RPM. ferrari-250-gto-v1.wav Recorded vehicle: Ferrari 250 GTO (year and build unspecified) Original title: Ferrari 250 GTO, Engine Sound.ogg Provo rossi — own-work publication on Wikimedia Commons, 1 August 2025 https://commons.wikimedia.org/wiki/File:Ferrari_250_GTO,_Engine_Sound.ogg CC BY 4.0: https://creativecommons.org/licenses/by/4.0/ Adapted by Camber Reign: mono 24 kHz PCM, filtering, source interval selection, loop overlap, DC/seam correction and normalization. Named 250 GTO source replaces Ferrari 340 America. Source does not certify the represented 1964 year, chassis or engine/exhaust build. Three running sections and in-game rev bands are authored, not measured RPM or isolated idle/load stems. No endorsement implied. gallardo-idle-v1.wav Recorded vehicle: Lamborghini Gallardo (year and trim unspecified) Original title: Lamborghini Gallardo Start Up Brett Levin / Brett Levin Photography (scubabrett22) — Flickr, published 11 February 2013 https://www.flickr.com/photos/scubabrett22/8464649517/ CC BY 2.0: https://creativecommons.org/licenses/by/2.0/ License terms: https://creativecommons.org/licenses/by/2.0/legalcode Adapted by AppsOverFlow from the publisher-hosted public MP4 transcode, not a camera-original master: selected seconds 10.20–11.55, mono 24 kHz PCM16 conversion, 65 Hz high-pass / 5.8 kHz low-pass filtering, cosine loop overlap, DC/seam correction and amplitude normalization. Named Gallardo source replaces the Huracán proxy. Source year, trim and engine/exhaust build are unspecified; the represented 2004 specification is not certified. One steady idle excerpt, with authored runtime pitch and high-rev attenuation alongside existing synthesis; not a measured full-RPM engine library. No endorsement implied.