- Custom Noise Sampling: Record specific sounds like keyboard clicks or fan noise to mute them automatically.
- Real-Time Noise Gating: Analyzes incoming audio live and blocks unwanted noise instantly.
- System-Wide Compatibility: Works with any communication or streaming app using your microphone.
- Easy Setup: Simple interface designed for non-technical users.
- Lightweight Performance: Minimal CPU usage compared to AI-heavy alternatives.
Closed Loop Labs Noise Blocker
Simple Windows noise gate app for clean microphone audio
Updated March 28, 2026
Closed Loop Labs Noise Blocker Overview
Noise Blocker by Closed Loop Labs is a lightweight Windows noise gate application designed to eliminate unwanted microphone sounds during calls, gaming, or streaming. Users record samples of background noise, which the app analyzes and automatically mutes while allowing voice through.
It works system-wide with popular apps like Discord, Skype, and Slack, and offers a free trial with daily limits.
Key Features
Pricing
| Plan | Price | Featured |
|---|---|---|
| Single User License | $19.99 (One-time fee) | Perpetual license, Use on up to 3 PCs, 12 months updates & support |
| Shared Use License | $39.99 (One-time fee) | Unlimited users on 1 PC, 12 months updates & support, Ideal for call centers |
Price details: https://closedlooplabs.com/noise-blocker/buy
Pros
Competitor |
Pros |
|---|---|
| Krisp | Noise Blocker is significantly cheaper with a one-time fee, while Krisp relies on subscriptions. It runs locally without cloud processing, giving users more privacy and lower latency. The simpler interface also makes it easier to configure for basic microphone noise needs. |
| NVIDIA Broadcast | Unlike NVIDIA Broadcast, Noise Blocker does not require RTX GPUs, making it accessible to more users. It uses fewer system resources and is more stable on older machines, which appeals to users with standard Windows setups. |
| RTX Voice | Noise Blocker supports a wider range of hardware and does not depend on NVIDIA drivers. Its sample-based noise blocking allows more control over exactly which sounds are muted, rather than relying solely on AI decisions. |
| OBS Noise Gate | Compared to OBS filters, Noise Blocker works system-wide without requiring OBS to be running. This makes it more convenient for calls and conferencing, not just streaming, and easier for non-streamers to manage. |
| Adobe Audition | Noise Blocker is far simpler and cheaper than Adobe Audition for real-time noise control. It focuses purely on live microphone use, avoiding the complexity and learning curve of professional audio editing software. |
Cons
Competitor |
Cons |
|---|---|
| Krisp | Krisp offers more advanced AI-based noise suppression that adapts automatically, while Noise Blocker requires manual noise sampling. This makes Krisp more convenient for users who frequently change environments. |
| NVIDIA Broadcast | NVIDIA Broadcast can deliver cleaner results for complex noise scenarios using AI models. Noise Blocker may struggle with unpredictable sounds like background voices compared to Broadcast’s neural filtering. |
| RTX Voice | RTX Voice excels at isolating human speech even in very noisy environments. Noise Blocker’s gate-based approach can occasionally cut off soft speech if not carefully tuned. |
| OBS Noise Gate | OBS offers deeper audio customization for streamers. Noise Blocker lacks advanced audio chains and filters, which limits fine-grained control for professional streaming setups. |
| Adobe Audition | Adobe Audition supports detailed spectral editing and post-processing. Noise Blocker cannot be used for recorded audio cleanup or advanced production workflows. |
Reviews
- Slashdot Review: Closedlooplabs Noise Blocker eliminates the need for “awkwardly toggling between mute and unmute” during conference calls and effectively silences irritating background noise. The snippet highlights that Closedlooplabs Noise Blocker handles distractions smoothly and maintains compatibility for everyday conferencing use.
