# Vehicle audio

`car-engine.wav`: **Car Engine Loop 96kHz, 4s**, recorded and looped by **qubodup**.

- Source: https://opengameart.org/content/car-engine-loop-96khz-4s
- License selected: **Creative Commons Attribution 3.0 Unported**, https://creativecommons.org/licenses/by/3.0/
- Adaptation: the author's normalized 44.1 kHz stereo version was downmixed to mono PCM16. Runtime changes playback speed, filtering and gain. No endorsement is implied.
- Source archive SHA-256: `06b14b760fde613b357d043517f604dfde024318e764dff209a179ea39c566d6`
- Derived WAV SHA-256: `a0cba2bc46170c54768877532bd481b090d7939311572797380aa76801fbaf64`

`motorcycle-engine.wav`: **Motorcycle_Yamaha_Tenere_250CC_Enduro_Idle.wav**, **Singular_Estudio**, March 23, 2020.

- Source: https://freesound.org/people/Singular_Estudio/sounds/510231/
- License: **CC0 1.0**, https://creativecommons.org/publicdomain/zero/1.0/
- Adaptation of the public HQ MP3 preview: excerpt from 12 seconds, downmix to mono, 100 ms tail/head crossfade into a four-second loop, peak normalization. The original high-resolution WAV was not downloaded.
- Exact download, processing parameters and SHA-256 hashes: `motorcycle-source.json`.