# Audio credits

## Tire squeal
- Original recording: **audible-edge (Tom Haigh)**; looping edit by **qubodup**.
- Source: https://opengameart.org/content/car-tire-squeal-skid-loop
- License: Creative Commons Attribution 3.0 — https://creativecommons.org/licenses/by/3.0/
- Local file: `tire-squeal.wav`.
- Changes: converted to mono 44.1 kHz/16-bit, high-pass filtered and peak-limited.


## Lancia engine layers (user-selected preview source)
- Recording: **19Bozzy92**, “Lancia Delta HF Integrale Evoluzione II (Evo 2): Accelerations & Stock Exhaust/Engine Sound”.
- User-supplied source: https://www.youtube.com/watch?v=W2Xrzal5vJk
- `lancia-idle.wav`: 00:55.200–00:57.500, close exhaust section.
- `lancia-mid.wav`: 02:57.500–02:59.300, onboard section.
- `lancia-high.wav`: 01:34.600–01:36.300, onboard acceleration section.
- Processing: mono 44.1 kHz, 35 Hz high-pass, level matching, 120 ms wrap crossfade. Runtime layers blend with revs and throttle, rather than repeatedly playing an entire acceleration.
- This is the supplied YouTube reference, not a CC0 sound pack. A redistribution license has not been established; local preview integration only.
- Preparation script: `scripts/prepare-lancia-audio.py` (source video stays outside project).

## Countdown
- **kheetor**, Race Start Countdown: https://opengameart.org/content/race-start-countdown
- Offered under CC0: https://creativecommons.org/publicdomain/zero/1.0/
- `countdown-tick.wav`: first pulse, trimmed to 0.96 s; `countdown-go.wav`: final pulse from 3 s, trimmed to 1.25 s. Mono conversion and tail fades.
- Sampled electronic countdown with reverb; not a recording from F1 or Gran Turismo.