Clean Mic

Free, open-source AI noise cancellation for your microphone on Windows.
Remove background noise, keyboard clicks and echo from your mic in Discord, OBS, Zoom, Teams and games.
No account. No subscription. No special GPU. Runs 100% on your PC.

⬇ Download Clean Mic for Windows  ·  Setup  ·  FAQ  ·  Roadmap  ·  Contribute

---

Fans, keyboards, traffic, kids, a loud room, a cheap headset: Clean Mic removes the noise around your voice, evens out your volume and makes sure you never clip, all in real time. Your clean voice goes to a free virtual microphone (VB-CABLE), so any app that lets you choose a microphone can use it.

It is made for normal people, not audio engineers: install it, pick CABLE Output as your mic in Discord, and you're done. Every setting is one slider with a plain-English name.

Features

• 🎙️ AI noise removal. Uses RNNoise, a neural network trained to separate voice from noise. Removes fans, AC, keyboard and mouse clicks, traffic, hum and room noise. One slider sets how strong it is.
• 🔇 Voice gate. Background sound is pushed down between your words and opens instantly when you speak.
• 🔊 Automatic volume (AGC). Whisper or shout, you come out at a steady, pleasant level.
• 🛡️ Never clips. A compressor and limiter catch shouts and laughs before they distort.
• 🔁 Speaker-echo removal. Using speakers instead of headphones? The WebRTC AEC3 echo canceller stops your friends hearing themselves.
• 🎚️ Voice styles and EQ. Natural, Warm, Crisp, Radio, Deep or Flat, plus Bass / Mid / Treble sliders and a drag-the-dots equalizer for fine-tuning.
• 🎧 Hear myself. Listen to your cleaned voice on your headphones.
• 🪶 Light and low latency. Native Rust audio engine (~30 ms buffer), small installer, works on any CPU. No NVIDIA RTX card needed.
• 🧭 Set and forget. Starts with Windows, lives in the tray, recovers when you unplug your mic, and updates itself.
• 🔒 Private. Audio never leaves your computer. No account, no telemetry, no internet needed (except for update checks).

Screenshots

Voice	Cleaning	Fine-tune	Settings

How to set it up

1. Download Clean.Mic_x.y.z_x64-setup.exe from the latest release and run it.
2. The installer offers to install VB-CABLE (free virtual audio cable) if you don't have it. Say yes, then restart your PC.
3. In the app where you talk, choose CABLE Output as your microphone:
   • Discord: User Settings → Voice & Video → Input Device → CABLE Output. Tip: turn off Discord's own noise suppression (Krisp), Clean Mic already does it.
   • OBS Studio: Settings → Audio → Mic/Auxiliary Audio → CABLE Output.
   • Zoom / Teams / Google Meet: Audio settings → Microphone → CABLE Output.
   • Games (Steam, Valorant, CS2, Fortnite, ...): voice chat input device → CABLE Output. Or set CABLE Output as the Windows default recording device so every app uses it.

That's it. The status at the top of Clean Mic says Cleaning your voice while you talk.

Windows SmartScreen warning? The installer isn't code-signed (certificates cost money every year), so Windows may say it "protected your PC". Click More info → Run anyway. All the source code is here, and every release is built from it by GitHub Actions.

Using it

Tab	What it does
Voice	Mic level meters, voice style, voice volume and Bass / Mid / Treble.
Cleaning	How strongly background noise is removed, and speaker-echo removal.
Fine-tune	Equalizer: drag a dot to shape your voice, scroll on it to make it wider or narrower, double-click to flatten it.
Settings	Which microphone to use, where to send the clean voice, start with Windows.

The buttons at the bottom:

• Big mic button: turn cleaning on or off. Off means others hear your raw mic.
• Left button: quickly switch microphones.
• Ear button: "Hear myself", play your clean voice on your headphones.

Closing the window keeps Clean Mic running in the tray (bottom-right of the taskbar). Right-click the tray icon to turn cleaning off or quit.

Clean Mic vs. other noise cancelling apps

	Clean Mic	NVIDIA Broadcast	Krisp	Built into Discord / Zoom
Price	Free	Free	Subscription	Free
Open source	✅	❌	❌	❌
Works on any PC (no RTX GPU)	✅	❌ RTX only	✅	✅
Works in every app at once	✅	✅	✅	❌ that app only
No account needed	✅	✅	❌	—
Speaker-echo removal	✅	✅	✅	varies
Voice styles + equalizer	✅	❌	❌	❌

FAQ

How do I remove background noise from my microphone on Windows? Install Clean Mic, then select CABLE Output as the microphone in your app. Clean Mic removes fans, keyboard and room noise in real time before anyone hears it.

Is Clean Mic free? Yes, completely free and open source under the MIT license. No ads, no account, no trial.

Does it work with Discord, OBS, Zoom, Teams, Skype, Steam and games? Yes. Anything that lets you pick a microphone works, because Clean Mic shows up as a normal microphone (CABLE Output).

Do I need an NVIDIA graphics card? No. Clean Mic runs on the CPU and works on any Windows 10/11 PC, laptops included.

Is it a good free alternative to Krisp or NVIDIA RTX Voice / Broadcast? That's exactly what it's for: AI noise suppression, echo removal and automatic volume with no subscription and no special hardware.

Does it add delay to my voice? Very little. Audio is processed in 10 ms frames with a small (~30 ms) output buffer, which you won't notice in calls or games.

Does it record or upload my voice? No. Everything is processed in memory on your PC. Nothing is saved or sent anywhere.

Others can't hear me. What's wrong? In your chat or game app, the microphone must be CABLE Output (not your real mic). In Clean Mic → Settings, "Send clean voice to" should be CABLE Input.

"CABLE Input" isn't in the list. VB-CABLE isn't installed yet, or Windows needs a restart after installing it. Clean Mic shows an Install VB-CABLE button when it's missing.

I hear an echo of myself. Turn off the ear button ("Hear myself") when you don't need it.

"Remove speaker echo" says it's paused. It pauses while "Hear myself" is on, because it would remove your own voice. If it says "not available", your speakers are the same device as the clean-voice output.

I unplugged my mic / plugged in a new one. Clean Mic notices and restarts on its own.

Mac or Linux? Windows only for now. The audio engine is cross-platform Rust, so ports are welcome: see Contributing.

How it works

mic ─► high-pass ─► AI denoise ─► echo removal ─► voice gate ─► auto volume ─► EQ ─► compressor ─► limiter ─► VB-CABLE
                     (RNNoise)      (AEC3)                                                                   └─► headphones (optional)

Audio is processed at 48 kHz in 10 ms frames on a dedicated real-time thread. The UI only sends settings and reads level meters through lock-free atomics, so it can never stall your voice.

Built with Tauri 2 (Rust + a plain HTML/JS interface), cpal for audio devices (WASAPI), nnnoiseless (RNNoise in Rust) and sonora (WebRTC audio processing / AEC3).

Contributing

Contributions are very welcome, from bug reports and translations to DSP work. Good places to start:

• Issues labeled good first issue or help wanted.
• Ideas and questions in Discussions.
• Read CONTRIBUTING.md for setup and guidelines.
• See what's planned in the roadmap: VST/CLAP plugins, recording with timed transcripts, and a live transcript to text.

If Clean Mic made your calls sound better, please ⭐ star the repo. It helps other people find it.

Development

Needs Rust (MSVC toolchain), Node.js 20+, and the Visual Studio Build Tools ("Desktop development with C++"). Build from PowerShell.

npm install
npm run dev     # run the app
npm run build   # build the installer (src-tauri/target/release/bundle/nsis/)
cd src-tauri; cargo test --release   # DSP and echo-removal tests

The first dev/build downloads the VB-CABLE driver pack into src-tauri/vbcable/ (checksum-verified, not committed).

Project layout

Path	What's there
src-tauri/src/dsp.rs	The cleaning chain: filters, denoise, gate, auto gain, EQ, compressor, limiter.
src-tauri/src/audio.rs	Audio engine: devices, streams, resampling, echo removal.
src-tauri/src/main.rs	App shell: commands for the UI, tray, autostart, updater.
ui/	The interface (index.html, main.js, style.css).
scripts/	VB-CABLE download and release helper.

Releasing (maintainers)

npm run release patch   # or minor / major / 1.2.3
git push --follow-tags

GitHub Actions runs the tests, builds and signs the installer, and creates a draft release with latest.json for the auto-updater. Publish it to ship the update. The workflow needs the TAURI_SIGNING_PRIVATE_KEY repo secret (contents of ~/.tauri/clean-mic.key); its public key is in src-tauri/tauri.conf.json. Keep the private key backed up: without it, installed copies can't verify updates.

Credits

• VB-CABLE is made by VB-Audio (www.vb-cable.com). It is donationware, all participations are welcome.
• RNNoise by Jean-Marc Valin, via nnnoiseless.
• WebRTC audio processing (AEC3), via sonora.
• Manrope font (SIL Open Font License).

License

MIT. Free for personal and commercial use.