As of 2025-2026, RNNoise remains a gold standard because of its efficiency. However, evolution is happening:
Download the latest release for Windows. Extract the archive and locate librnnoise_vst.dll — this is the file you will use.
librnnoise-vst.dll is the Windows version of the real-time noise suppression plugin, originally developed by Xiph.Org and ported for VST use by werman on GitHub . It uses a neural network to identify and remove background noise (like fans or keyboards) while preserving human speech. 🛠️ Installation & Setup
This small file is the heart of one of the most effective, free, real-time noise suppression tools available for Windows. Based on Xiph’s RNNoise library, this VST plugin uses recurrent neural networks to intelligently separate human voice from background noise, making it a favorite for content creators and professionals alike.
The "librnnoise-vst.dll" file is a DLL file that contains a VST plugin implementation. The "rnnoise" part of the filename suggests that it might be related to a noise reduction or noise cancellation algorithm. librnnoise-vst.dll
librnnoise-vst.dll is the core dynamic-link library (DLL) file for the plugin, developed by werman on GitHub . It is a VST (Virtual Studio Technology) plugin designed to suppress a wide range of background noise, including: Computer fans Office chatter Crowd noise Airplane/car/train engines Construction sounds
You have a quiet recording environment and prefer analog hardware processing, or you use a DAW that only supports VST3.
: The underlying RNNoise architecture combines classical digital signal processing (DSP) with deep learning. It processes audio in the frequency domain but uses a Recurrent Neural Network (specifically, a Gated Recurrent Unit or GRU) to calculate the probability of voice presence.
Used as a filter to remove fan noise or AC hum during live streams. As of 2025-2026, RNNoise remains a gold standard
: It takes the pre-trained weights from Valin’s research and applies them to incoming audio streams to filter out background noise (like keyboard clicks or fans) with very low latency.
The librnnoise_vst.dll file itself is compiled for use with any VST2‑compatible host software on Windows. It suppresses a wide range of common background noises, including:
To ensure the plugin works effectively, maintain these settings:
This was subsequently fixed by the developer in an updated release. Make sure you are using the latest version of the plugin. librnnoise-vst
The most common use case is OBS Studio for streaming or recording.
Unlike traditional noise suppression that relies on static filters or simple noise gates, the technology behind this DLL uses a . This AI-driven approach allows the plugin to distinguish between human speech and unwanted environmental sounds by analyzing audio in sequences.
While it requires a decent CPU and can sound slightly artificial if you crank the suppression to 100%, it is vastly superior to traditional noise gates for general noise removal. If you are tired of tweaking threshold knobs and still hearing keyboard clicks, this plugin is a must-have.
Do you need help with for installation? I can provide tailored steps for your setup. Share public link