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Fly By Sounds

Dynamic wind sounds when props fly past you. (Updated & Optimized 2025)


Have a fix or optimization? Contribute here![github.com]


More Info:

Applies to props, ragdolls, 'Bouncy Ball' from Sandbox, and more.

Volume and Pitch scale based on multiple variables such as speed, shape volume, and distance.

The pitch and volume ranges can be modified via server console variables:

sv_flybysound_minspeed (default: 100)
- Minimum speed required for sound to be heard.

sv_flybysound_maxspeed (default: 1000)
- Volume does not increase after this speed is exceeded.

sv_flybysound_minshapevolume (default: 1)
- Pitch does not increase when shape volume (3D area) falls below this amount.

sv_flybysound_maxshapevolume (default: 300)
- Pitch does not decrease when shape volume (3D area) exceeds this amount.

sv_flybysound_minvol (default: 30)
- Object must have at least this much volume (area) to produce fly by sounds.

sv_flybysound_playersounds (default: 0)
- Script applies to players.

cl_flybysound_updatedelay (default: 0.05)
- How often the script updates sound effects (pitch, volume). Smaller values give smoother sound transitions but more CPU intensive.

cl_flybysound_scandelay (default: 0.5)
- How often the script scans for relevant entities. Smaller values give faster feedback but are more CPU intensive.

cl_flybysound_cutoffdist (default: 3000)
- Maximum distance at which sounds can be heard. Smaller values can give better performance in large maps.

cl_flybysound_altsound (default: 0)
- If set to 1 then an alternative wind sound will play. (Portal 2)

sv_flybysound_spinsounds (default: 0)
- If set to 1, the sound will be heard when an entity is spinning.

cl_flybysound_loudness (default: 1.0)
- The overall volume of the audio can be scaled down by setting values below 1.0

(If these variables confuse you, probably best not to change them.)

(Sorry Note: Sorry for confusing variable names because sound 'volume' and 3D area 'volume' are both the same spelling. Next time I will name area volume 'size' for less confusion, but I do not want to change the variables in this script or people will lose their console variable settings.)

A tool to mute the sounds on specific entities is available here.


Enjoy! :)


Credits
Sofibyte addon author
Wontairr alternative wind sound, bug fixes, spin sounds, spawn-menu options
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