Kleervox removes background noise from your microphone in real time and hands every call app a clean signal. Set it up once and it applies to Zoom, Teams, Meet, Discord, and OBS — with your audio never leaving your PC.
Zoom, Teams, and Discord each ship their own noise suppression, and each one has to be found and switched on separately. Browser-based calls frequently expose no setting at all, and none of them help when you are recording.
A gate cuts everything below a volume threshold, which clips the beginnings of words and does nothing while you are speaking. A speech model separates your voice from the rest of the room continuously, so quiet talking survives and steady hum does not.
The cleaned signal is offered to Windows as an ordinary input device, so anything that lets you choose a microphone can use it — including recording and streaming tools.
Keyboards, chairs, dogs, doors, and nearby conversation are sudden and speech-like. Those are exactly the cases where a simple threshold filter gives up.
Windows does not let an application publish a new microphone on its own, so the setup includes a small signed audio driver. Kleervox walks you through it and you only do it once.
Download and run the Windows installer from the download page.
The app guides you through installing VB-Audio's free, Microsoft-signed VB-CABLE — download, extract, run as administrator, install. Kleervox then detects it and routes to it for you.
In Kleervox, select the headset, USB mic, or laptop microphone you actually speak into.
In Zoom, Teams, Meet, Discord, or OBS, pick “CABLE Output (VB-Audio Virtual Cable)” as the input device, and keep your headphones or speakers as the output.
VB-CABLE is made by VB-Audio and installed by you from VB-Audio under their terms — Kleervox does not bundle or redistribute it.
Because the cleaned audio behaves like a normal input device, you are not limited to apps that happen to include their own suppression — and you get the same result when recording.
Want the background on the processing itself? Read the overview of AI noise cancellation. Running a support team? See the guide to reducing background noise in a call center. On a Linux machine instead, see noise cancellation for Linux.
Live microphone audio is never uploaded for cleaning. The work happens on your own machine, which matters for confidential calls and for anyone whose employer restricts what can leave the device.
It also means the cleaning does not depend on your connection — only the call itself needs the network.
If the person you are talking to hears their own voice come back, that is acoustic echo, not background noise: their voice leaves your speakers and re-enters your microphone.
Echo cancellation is available on Linux today; on Windows it is still in development. Headphones remove that path completely and are the most reliable fix on any platform.
Try it with your own microphone in the browser before installing anything.
Yes. Kleervox runs on Windows 10 and Windows 11 and cleans your microphone in real time, so every call app receives audio that already has the background noise removed.
Open Kleervox and select your real microphone inside it, then open Zoom's audio settings and choose the Kleervox microphone as the input. Because the cleaning happens before Zoom receives the signal, you can leave Zoom's own suppression off.
Windows has no built-in way for an app to publish a new microphone to the system, so a small signed audio driver is needed. Kleervox guides you through installing VB-Audio's free, Microsoft-signed VB-CABLE step by step, then routes the cleaned audio to it automatically. It is a one-time setup.
After setup, choose "CABLE Output (VB-Audio Virtual Cable)" as the microphone in Zoom, Teams, Meet, Discord, or OBS. Keep your normal headphones or speakers as the output device. Kleervox's own setup screen shows you exactly which name to pick.
Not yet — echo cancellation is available on Linux today, and system-audio reference capture on Windows is still in development. If callers report hearing their own voice back, wearing headphones removes that path entirely, which is the most complete fix on any platform.
The cleaning runs continuously while a call is active, so it does use some processor time. It is designed to run alongside a video call on ordinary laptop hardware, and it automatically reduces its own workload if the machine starts to struggle.
No. Noise cancellation runs entirely on your own PC. Live microphone audio is not sent to a server for processing, so it keeps working even when your connection is poor.
No. A headset, USB microphone, or the one built into your laptop all work. Getting the microphone closer to your mouth still helps, but the point of the app is that you should not need to buy new hardware to sound clear.
The browser demo mixes your microphone with sample background noise so you can switch between the original and the cleaned result. It runs on your machine too — nothing is uploaded.
Test noise cancellation free