STILL OUTSIDE — BUILD 2080 AUDIO CREDITS

The following recordings were cropped, downmixed, filtered, normalized and crossfaded into game loops. Some loops were resampled to create family variations. Playback is also pitch- and volume-modulated in game. Source RPM values were not measured; manifest RPM values are sound-design calibration estimates. These authors do not endorse this game.

These credits and license links must accompany distribution of the audio. The licenses below apply to their respective audio material, not the entire game. No additional restrictions are imposed on those licensed recordings.

Eight-cylinder engine idling.wav
by Lumamorph
https://freesound.org/people/Lumamorph/sounds/636066/
CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/
Game files: v8-low.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade.
Uploader describes an American eight-cylinder engine idling. Exact vehicle not specified.

Diesel Start-Idle-Revs MZ000004.wav
by DAVESTALKER
https://freesound.org/people/DAVESTALKER/sounds/443319/
CC0 1.0 — https://creativecommons.org/publicdomain/zero/1.0/
Game files: diesel-low.wav, diesel-high.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade. Pitch resampling.
Uploader describes a modified Ford F350 diesel with aftermarket turbo; source includes talking outside the selected idle window.

engine_subaru_forester_1989b.wav
by mario1298
https://freesound.org/people/mario1298/sounds/181233/
CC0 1.0 — https://creativecommons.org/publicdomain/zero/1.0/
Game files: boxer-low.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade.
Uploader labels this Subaru. Its supplied model/year combination is inconsistent, so no exact model/year is asserted.

engine_idle_loop_1.wav
by RichieMcMullen
https://freesound.org/people/RichieMcMullen/sounds/386793/
CC0 1.0 — https://creativecommons.org/publicdomain/zero/1.0/
Game files: inline4-low.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade.
Uploader describes a car engine ticking over; cylinder count and model unspecified.

M3 accelerate
by ccdff2
https://freesound.org/people/ccdff2/sounds/343369/
CC BY 3.0 — https://creativecommons.org/licenses/by/3.0/
Game files: inline6-low.wav, inline6-high.wav, rotary-high.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade. Pitch resampling.
Uploader describes BMW M3 acceleration. Generation and engine configuration unspecified; inline-six/rotary use is a game sound-design approximation.

Race Car Jalopy Muscle Car Dragster Hot Rod Supercharger Big Block Engine Burnout High Performance Automobile Sports Car Vehicle Engine
by fudgealtoid
https://freesound.org/people/fudgealtoid/sounds/750729/
CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/
Game files: v8-high.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade.
Uploader describes a high-performance muscle-car engine. Exact vehicle and recording setup are not specified.

screeching tyres / tires
by johnnydekk
https://freesound.org/people/johnnydekk/sounds/614627/
CC0 1.0 — https://creativecommons.org/publicdomain/zero/1.0/
Game files: tire-scrub.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade. Pitch resampling.
Recorded rubber Foley: uploader dragged a hot-water bottle over tiles using an H4N. This is not a recording of car tires.

Toyota Avalon 2011 Engine Sound in Stereo sound while driving
by Tom_Kaszuba
https://freesound.org/people/Tom_Kaszuba/sounds/825221/
CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/
Game files: v6-low.wav, v6-high.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade.
Uploader describes a 2011 Toyota Avalon, two microphones under the hood while driving, captured with MixPre-3 II and Audio-Technica ES943/C.

Porsche.MP3
by mmplisskin
https://freesound.org/people/mmplisskin/sounds/90404/
CC0 1.0 — https://creativecommons.org/publicdomain/zero/1.0/
Game files: boxer-high.wav, v12-high.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade. Pitch resampling.
Uploader describes a Porsche engine recorded with an Edirol R09. Exact model/configuration not specified; V12 use is an explicitly processed approximation.

Mazda 121 engine EXT
by J.Zazvurek
https://freesound.org/people/J.Zazvurek/sounds/244935/
CC0 1.0 — https://creativecommons.org/publicdomain/zero/1.0/
Game files: inline4-high.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade.
Uploader describes a microphone near a Mazda 121 engine; source already mixed/mastered.

Chrysler LHS tire squeal 03 (04-25-2009).wav
by audible-edge
https://freesound.org/people/audible-edge/sounds/71738/
CC0 1.0 — https://creativecommons.org/publicdomain/zero/1.0/
Game files: tire-squeal.wav
Changes: crop; mono 32 kHz / 16-bit PCM; rumble/hiss filtering; DC removal; gain normalization; seamless crossfade.
Uploader describes recording a 1996 3.5L V6 Chrysler LHS accelerating through hard corners with tire squeal, captured with a Rode NTG2 into a Zoom H4.

Additional disclosure: V12 and rotary game profiles are processed approximations from Porsche and M3 recordings, respectively. They are not authentic captures of those engine configurations. Electric motor audio remains procedural. Tire squeal uses the recorded Chrysler listed above; scrub uses recorded rubber Foley.

Detailed source hashes, license evidence hashes, transformations and runtime hashes: audio-sources-2080.json