Audio credits

These credits cover the recordings used during races and in sound previews.
Previews use the same recordings as the corresponding race sounds.

Race engine ambience
"formula 1 racecar passby" by Geoff Bremner (Geoff-Bremner-Audio).
License: Creative Commons Attribution 4.0 International (CC BY 4.0).
Source: https://freesound.org/people/Geoff-Bremner-Audio/sounds/751867/
License URL: https://creativecommons.org/licenses/by/4.0/
Use: car pass-by at Start/Finish crossings and engine sound preview.
Playback includes volume adjustment and fades; race playback varies speed slightly.

Tyre-change sound
"Air Impact Wrench" by sevenbsb.
License: CC0 1.0 Universal.
Source: https://freesound.org/people/sevenbsb/sounds/349398/
License URL: https://creativecommons.org/publicdomain/zero/1.0/
Modified: a 0.8-second excerpt, converted to identical left/right channels,
with DC removal, fades and peak normalisation.

Podium cheer
"Applause in a large hall or church" by eXpl0it3r.
License: CC0 1.0 Universal.
Source: https://opengameart.org/content/applause-in-a-large-hall-or-church
License URL: https://creativecommons.org/publicdomain/zero/1.0/
Use: the first four seconds, with playback volume adjustment and fades.

Dry weather ambience
"Forest Summer Day, Quiet Calm Birds and Insects" by Villehardt.
License: CC0 1.0 Universal.
Source: https://freesound.org/people/Villehardt/sounds/613995/
License URL: https://creativecommons.org/publicdomain/zero/1.0/
Modified: source 3:30-3:51, resampled, DC removed, crossfaded into a
20-second loop and loudness adjusted.

Damp weather ambience
"Light rain looping" by Mixkit (item 1249).
License: Mixkit Sound Effects Free License (not CC0).
Source: https://mixkit.co/free-sound-effects/rain/
License URL: https://mixkit.co/license/modal/sfxFree/
Modified: source seconds 5-26, resampled, DC removed, crossfaded into a
20-second loop and loudness adjusted.

Wet weather ambience
A mix of the following two CC0 1.0 Universal recordings:
- "Heavy Rain Sound - Inu Etc.mp3" by inuetc.
  Source: https://freesound.org/people/inuetc/sounds/507902/
- "thunder crack.wav" by cognito perceptu.
  Source: https://freesound.org/people/cognito%20perceptu/sounds/347853/
License URL: https://creativecommons.org/publicdomain/zero/1.0/
Modified: rain excerpt looped and filtered; thunder filtered, shaped and
faded; both recordings resampled, mixed and loudness adjusted.

Electronic cues and speech
Countdown, GO, Yellow flag, finish and end-race beeps are generated by the
application using Web Audio. Announcer speech uses the selected browser or
device voice. These are not third-party audio recordings bundled with the app.