Alt Denoiser vs Kleervox
Alt Denoiser
github.com
Kleervox
kleervox.comSide by side
| Figure | Alt Denoiser | Kleervox |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | Yes |
| Plans published | 0 | 2 |
| Spec score · AI Noise Cancellation Software | 7.5 (#10) | 8.6 (#4) |
| Linux setup | The build instructions list GUI and audio development dependencies for Ubuntu/Debian, Fedora, and Arch Linux and note that JUCE requires X11/XWayland client headers even under Wayland. | Linux creates its virtual microphone at runtime through the audio server and needs no separate driver or kernel module. |
| Purpose | Alt Denoiser is a real-time AI audio noise suppression plugin based on DeepFilterNet. | Kleervox removes background noise and speaker echo from calls using real-time on-device processing. |
| Support | The repository exposes GitHub Issues for project questions and bug reports. | Email support is provided at [email protected] with a stated usual response time of one to two business days. |
Plans
In their own words
Alt Denoiser
Alt Denoiser is a real-time audio noise suppression plugin based on DeepFilterNet. It is free and open source, with precompiled downloads for Windows, macOS and Linux in VST3, VST2, AU, LV2 and Standalone formats. DeepFilterNet3 models are bundled, so no separate model download is needed. The plugin accepts any host sample rate and resamples automatically. Its interface has an attenuation control and input and output RMS meters. Version 1.0.2 supports mono-to-mono, stereo-to-stereo and mono-to-stereo routing, and declares 1,920 samples of latency for startup and reset FIFO prefill. Release notes mention fixes for stutter and dropouts in EqualizerAPO and DAWs at standard host buffer sizes. Linux build instructions cover Ubuntu/Debian, Fedora and Arch; building from source requires CMake 3.15 or later, Rust and a C++ compiler. The project is licensed under GPLv3 and directs questions and bug reports to GitHub Issues. macOS binaries target macOS 14.0 and later.
Kleervox
Kleervox reduces background noise and speaker echo during calls using real-time processing on the device. Its neural noise cancellation separates speech from sounds such as keyboards, traffic, fans, and chatter, while echo cancellation reduces a caller’s voice leaking from speakers back into the microphone. It works as a virtual microphone in apps that let users select a microphone, including Zoom, Google Meet, Microsoft Teams, Discord, Slack, and OBS. The maker says microphone audio, recordings, and cleaned output are not uploaded, stored, or inspected. Its privacy policy also lists collection of Google sign-in details, usage metrics, installer activity, account state, sign-in history, website and demo analytics, and limited billing data. Free provides one hour of cancellation per day; afterward the microphone works without cancellation until local midnight. New accounts receive a seven-day Pro trial after first successful desktop use, with no card required. Downloads are available for Windows 10, Windows 11, and Linux; macOS is described as coming soon. Windows setup uses VB-CABLE, while Linux creates the virtual microphone automatically.