CrystalClear
Client-side microphone noise suppression. Cuts fans, AC, and keyboard rattle from proximity chat. Strength is in config.ini.
About this mod Author’s original text
CrystalClear
Grain Rot's audio settings only give you a microphone threshold: when the mic is considered open. They do not strip the hiss, fan, AC, and keyboard rattle that still ride along once you are talking.
CrystalClear turns on Unreal Engine's unused microphone noise gate and keeps it applied for the whole session. Background noise below the gate is silenced before it hits proximity chat. Your in-game threshold slider is left alone.
Install
- Open r2modman or the Mod Manager.
- Select Grain Rot.
- Install CrystalClear. The manager pulls in GrainRot UE4SS for you.
- Start the game modded.
Config
Edit config.ini in the mod folder, then restart the game.
In r2modman: Settings → Browse profile folder, then open shimloader/mod/ and find the CrystalClear folder.
Enabled = 1
Suppression = 60
Verbose = 0
| Key | Default | Range | What it does |
| --- | --- | --- | --- |
| Enabled | 1 | 0 or 1 | Master switch. 0 leaves the microphone untouched. |
| Suppression | 60 | 0–100 | How hard to push background noise down. 0 is off, 100 is aggressive. |
| Verbose | 0 | 0 or 1 | Extra re-apply lines in UE4SS.log |
Optional overrides, if you want to skip the Suppression mapping:
GateThreshold = 0.10
AttackTime = 0.02
ReleaseTime = 0.18
| Key | Default | Range | What it does |
| --- | --- | --- | --- |
| GateThreshold | derived | 0.0–1.0 | Linear amplitude for the gate. Higher = more noise cut. |
| AttackTime | 0.02 | 0–2 | Seconds for the gate to open when you start talking. |
| ReleaseTime | derived | 0–2 | Seconds for the gate to close after you stop. Raise this if word endings get clipped. |
Start at 60. If teammates still hear your keyboard, raise it. If the starts of words get eaten, lower it.
Who needs it
| Player | Need the mod? |
| --- | --- |
| You (host or joiner) | Yes, for your own microphone |
| Friends in the lobby | No |
This is client-side. It only processes your mic before the game sends it. Friends hear the cleaned audio whether or not they install it. It does not clean anyone else's mic.
Notes
- Does not change the in-game microphone threshold slider.
- Does not change enemy hearing, voice volume, or push-to-talk.
- Look for [CrystalClear] lines in UE4SS.log to confirm the gate applied.
Changelog
See CHANGELOG.md.
Install & use Install: follow the bundled instructions
- Unzip the archive from playbuff and read the bundled readme / instructions first.
- Most mods rely on the game's mod loader — the usual route is a community mod manager (such as r2modman): pick this game, install, and it handles the loader and dependencies.
- For a manual install, put the mod files into the matching Mod / plugins folder inside the game directory.
- Launch the game to confirm it loaded; mods with listed dependencies need those installed as well.
Install locations vary a lot between mods — the bundled readme is the most reliable guide.
Install these first, or the mod will not work: