Noise Blocker

Noise Blocker is a Windows microphone-noise filter for calls, recordings, and streams. It is best for people who want automatic cleanup in familiar apps and can accept a modest processing delay. Its main appeal is a personal license that covers up to three computers; its weekly free allowance is too small for regular use.

Overview

Version 3 uses AI to distinguish the speaker’s voice from sounds such as fans, keyboards, clicks, hiss, and room noise. The maker says it works without tuning and is designed for everyday laptops. That makes it a straightforward option for users who do not want to configure audio filters, though about 80 milliseconds of added latency, which varies by system, can be a drawback when immediate audio response matters.

Key features

Real-time microphone cleanup: Noise Blocker processes microphone audio for calls, recordings, and streams. It focuses on background-noise reduction rather than a broader set of audio-production tools.

Compatible apps: Zoom, Google Meet, Discord, Slack, Teams, and OBS are supported. That range suits people who want filtering in common meeting, chat, and recording workflows.

Privacy and payments: Website analytics are cookieless and are not used for visitor profiles, advertising, or cross-site tracking. License validation may process activation history, app version, activation dates, and a hashed or pseudonymised device identifier. Stripe handles card payments as a PCI Service Provider Level 1 processor; the maker says it does not see or store payment details.

Pricing

The Free version costs nothing and allows 30 minutes of noise blocking per week, with no email required. That is enough for occasional use, but not a practical daily allowance for regular calls or recording.

The Personal license costs $50 as a one-time purchase, as a one-time payment. It covers one person on up to three PCs, includes 12 months of updates and priority support, and permits indefinite use of covered versions. It also comes with a 14-day money-back guarantee. The three-computer limit and household sharing option make it a reasonable fit for one person or family members at home, rather than a team. After the included year, an existing license key can be renewed for $30, paid once for another 12 months of updates and priority support.

The Business trial is free for a 30-day trial covering up to 20 employees or computers. Requests require approval, and the trial period begins when the first device connects; no card is required and there is no automatic charge. Business licenses use graduated one-time pricing, excluding VAT: $70 each for 1–9 licenses, $60 each for 10–39, and $50 each for 40 or more. Per-employee licensing covers one person on up to two computers; per-computer licensing covers one shared computer for any number of users. The page supports up to 200 licenses, with a custom quote for larger rollouts.

Platforms

Noise Blocker supports Windows 10 and Windows 11. Other operating systems are not supported, so users on macOS or Linux will need another option. Its latency is about 80 milliseconds and varies by system, a meaningful consideration for workflows that depend on close-to-immediate microphone monitoring.

Who it's for

Noise Blocker suits Windows users who regularly join calls or record or stream through supported apps and want background-noise reduction without manual tuning. The Personal license is the clearest fit for an individual who uses several PCs or shares the software with household family members. Businesses can evaluate it through the request-based trial and choose per-employee or shared-computer licensing. It is less suitable for occasional users who would exceed the small weekly free allowance, users of other operating systems, or anyone for whom processing delay is unacceptable.

Pros and cons

Pros: Automatic AI voice separation targets common household and office noises; compatibility spans major meeting, chat, and recording apps; one Personal license covers up to three PCs and includes a year of updates and priority support.

Cons: The free version is capped at 30 minutes per week; Windows 10 and 11 are the only supported operating systems; processing adds about 80 milliseconds of latency, with the exact amount varying by system; Business trials require approval.

Alternatives

AI Noise Cancellation Software is a broader category to explore if you want to compare more tools.

Kleervox is a stronger fit if you need Linux or web support, or want a free allowance of one hour of cleaning per day alongside echo cancellation and a virtual microphone.

Krisp AI Meeting Assistant is an option for users who want a seven-day premium trial and support across mobile, desktop, and browser-extension platforms.

neep may suit individuals and small teams who prefer an annual plan with unlimited use and no daily minutes cap.

NVIDIA ShadowPlay is a free Windows alternative for users with a supported GPU and GeForce 551.52 driver or later.

DeepFilterNet is a free, open-source option for users who want software available on Linux, macOS, or Windows.

NoiseTorch-ng is a free alternative for Linux users with PulseAudio or PipeWire.

SoliCall Noise Firewall is another paid option, with pricing available by contacting SoliCall.

Waves Curves AQ may be preferable if you want a broader plugin suite; its Waves Ultimate subscription includes Curves AQ and costs $24.99 a month or $249 USD per year.

Verdict

Choose Noise Blocker if you use Windows, want automatic microphone cleanup in common calling and recording apps, and value a one-time personal license for up to three computers. Look elsewhere if you need another operating system, more than 30 free minutes per week, or less latency-sensitive processing.