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Noise suppression for voice

Open source Free
Plug-in format
Audio Unit AUv3 LV2 VST VST2 VST3
Platform
Linux Windows
Delivery
Plugin

Realtime noise suppression plugin for voice based on RNNoise to reduce background noise in audio

Summary

Noise suppression for voice is a real-time noise suppression plugin based on Xiph's RNNoise library. It is designed to reduce various background noises in voice recordings or streams while preserving voice quality as much as possible.

Features

  • Supports multiple plugin formats: VST2, VST3, LV2, LADSPA, AU, AUv3.
  • Operates only with 48 kHz sample rate and 16-bit audio input.
  • Designed to suppress noise from sources such as computer fans, office environments, crowds, airplanes, cars, trains, and construction.
  • Has a minimalistic graphical user interface (GUI) to adjust parameters and view diagnostic statistics.
  • Configurable parameters include Voice Activity Detection (VAD) Threshold, VAD Grace Period, and Retroactive VAD Grace Period to fine-tune noise suppression behavior.
  • Includes detailed instructions for use on Windows with Equalizer APO and on Linux with PipeWire and PulseAudio.
  • Open source under GPL-3.0 license and actively maintained on GitHub.

Limitations

The plugin may not improve voice quality if the microphone itself is poor; it may even degrade it by misclassifying voice as noise.

Platforms

Explicitly supports Windows and Linux platforms through mentioned middleware (Equalizer APO on Windows, PipeWire and PulseAudio on Linux). No other platforms are indicated.

License and Availability

The software is licensed under GPL-3.0 and is available free of charge as open source software on GitHub.

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