Acoustic Occlusion - F4SE (updated)

Acoustic occlusion adds realistic sound propagation to Fallout 4. Gunshots, explosions, voices, radios, and ambient sounds are naturally masked by walls and cover, and can be blocked based on the material.

Original address:

Prefix:

Runtime Database：

Fallout 4 Script Extender (F4SE)：

Updated on August 28th:

Version 1.6.2

Bug fixes

-> Fixed crash introduced with mod porting

Updated on August 27th:

Version 1.6.1

Overview

->Increase NG compatibility

-> This mod now requires a runtime database

Updated on August 3rd:

Version 1.6.0

Overview

-> Crash fixed again!

Version 1.5.1

Overview

-> Many new changes and tweaks

-> Redesigned ray casting

-> AE updated to the latest version

Version 1.4.2

Overview

-> Forgot to add a new DLL to AE

Version 1.4.1

Overview

-> Exclude items and other animated objects from raycasting

Version 1.4.0

Overview

Thanks to everyone for testing and sharing crash logs. This helps me a lot!

-> Mod reworked! Do it again! It should be much more stable now than before, and hopefully the crash has disappeared.

Updated on August 1st:

Version 1.3.0

Overview

->More fixes and improvements

Updated on July 31st:

Version 1.2.0

Overview

-> Reworked raycasting for this mod, which should eliminate crashes

Version 1.1.5

Bug fixes

-> Fixed another engine-level bug, which was triggered by this mod. 3 have been fixed!

Now upload the AE file (applicable to the anniversary version) and the OG file (applicable to the 163 version) to install according to your own game version.

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Introduction:

Imagine standing outside a building and there is an explosion inside.

You wouldn’t expect it to sound the same as when you stand next to it. Walls, floors, and other obstructions naturally change the way sound travels, helping you understand what's happening without seeing the event.

In Fallout 4, this sense of separation is often missing. Many explosions, gunshots, voices, and other sounds remain clear even if there are several walls or even an entire building between you and the source of the sound. Acoustic occlusion restores that missing layer of immersion by evaluating the environment before supported sounds reach the player.

it

Rather than simply lowering the volume, determine the space between you and the sound source and calculate how much sound should actually get through.

It even supports material detection. Dense surfaces like concrete or steel emit sound more easily than lightweight materials like wood or glass, resulting in more natural audio transitions.

Whether you hear a gunfight behind a wall, a radio blaring in a room, or an explosion on the other side of a building, sound now feels connected to the world around it, rather than ignoring it.

This world doesn't just look believable.

This finally sounds believable.

Known limitations

Acoustic masking relies on Fallout 4's Havok collision data to determine whether sounds are blocked by walls and other objects.

Some visible surfaces only use render geometry, or have incomplete collision data, meaning they cannot be detected as sound barriers. In this case, the sound may be less muffled than expected.

This is a limitation of the game's collision data, not an issue with the mod itself.

Install

Use your favorite mod manager to install the correct version for your game.

The included INI file allows you to customize the module.

uninstall

Uninstall at any time using your favorite mod manager.