From Elite Wiki
The tone of engine sound follow the speed of your ship if you install Engine Sound OXP.
Requested in the Sound effects topic.
Oolite v1.79 or later.
Do not unzip the .oxz file, just move into the AddOns folder of your Oolite installation.
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License version 4.0. If you are re-using any piece of this OXP, please let me know by sending an e-mail to norbylite at gmail.com.
The sound file is copied from BGS and modified for various speeds.
2014.12.06. v1.2 Louder sound files and volume follow speed to reduce scraping. No sound in pause. 2014.12.05. v1.1 Exclude Torus speeds. 2014.12.04. v1.0 First release.
Engine_Sound_1.2.oxz (downloaded 4014 times).
|1.2||2015-12-05||CC BY-NC-SA 4||Engine Sound||Ambience OXPs||Norby||BB-Link|