Class NoiseSuppression

A NoiseSuppression node is used to condition the output from a microphone. It helps remove background noise and reduce network bandwidth by suppressing background audio.

• In "suppress" mode, the node uses DNN (Deep Neural Network) noise suppression to automatically suppress background noise and remove noise from a speech signal.

• In "gate" mode (the default), the node uses a traditional noise gate to suppress audio at levels below an adjustable threshold.

Both modes reduce network traffic and CPU load when blocking background noise, but DNN noise suppression is more computationally expensive than the simple noise gate.

A NoiseSuppression node can also be used to mute audio while maintaining the audio stream so that, for example, position Metadata continues to be sent.

Example

const noiseSuppression = new NoiseSuppression(audioContext);
noiseSuppression.setMode('suppress');
noiseSuppression.setMuted(muted);
const sourceNode = audioContext.createMediaStreamSource(mediaStream);
sourceNode.connect(noiseSuppression).connect(destinationNode);