The exact name can vary depending on how the library was compiled (MSVC, MinGW, etc.). If you encounter a file named librnnoise.dll , that's often the same library with a simplified naming convention.
#define FRAME_SIZE 480 // 10ms at 48kHz DenoiseState *st = rnnoise_create(NULL); float input[FRAME_SIZE]; float output[FRAME_SIZE];
: Unlike standard noise gates, it is designed to filter out complex, non-static noises such as
Specifically, the librnnoise_vst.dll allows you to take this powerful neural network-based suppression and use it system-wide or within your favorite audio software. What is RNNoise? librnnoisevstdll
Because it utilizes a clever hybrid of traditional DSP and small-scale neural networks, it won't spike your CPU or drag down your gaming frame rates.
import rnnoise
C:\Program Files\OBS-Studio\obs-plugins\64bit\ (for direct OBS integration) Step 3: Scan and Load in Your Host Software Open your host application (e.g., OBS Studio). Go to your microphone or Effects menu. Select VST 2.x Plug-in . Choose librnnoisevstdll from the drop-down menu. The exact name can vary depending on how
The file is a core component of the RNNoise VST plugin , an open-source real-time noise suppression tool designed specifically for voice recordings. Based on a recurrent neural network (RNN), this library effectively filters out background sounds like computer fans, office chatter, and traffic, making it a popular free alternative to premium solutions like NVIDIA Broadcast. Key Features and Technical Requirements
: It is known for having a negligible CPU impact compared to proprietary AI solutions like NVIDIA RTX Voice. Compatibility
Set your system audio and OBS audio settings to 48kHz (48000 Hz). What is RNNoise
librnnoisevstdll (more commonly known as rnnoise-vst.dll ) is a lightweight, real-time noise suppression plugin based on the
The librnnoisevst.dll file is a VST (Virtual Studio Technology) plugin module that enables AI-based noise suppression. It is specifically designed to work within audio hosts on Windows, such as OBS Studio, DAW (Digital Audio Workstation) software, or system-wide audio routers like Light Host.
is a noise suppression library based on a recurrent neural network (specifically a GRU - Gated Recurrent Unit). Unlike traditional noise gates that simply cut audio below a volume threshold, or standard noise reduction that uses spectral subtraction, RNNoise is trained to recognize the difference between human speech and noise.