title: Noise Reduction (RNNoise)
media types:
Audio
description: Reduce background noise in speech tracks using the RNNoise recurrent neural network library.
version: 1
creator:
copyright: Meltytech, LLC
license: LGPLv2.1
Operates at 48 kHz; audio is resampled automatically if needed. RNNoise itself introduces two 480-sample frames of latency, or about 20 ms at 48 kHz, and both the filter and the link are subject to that delay. At the start of playback, and again after a seek or other discontinuity, the filter inserts up to one additional 480-sample frame of silence, or about 10 ms, so it can stay aligned across MLT frame boundaries without lookahead.
title: Suppression
description:
Wet/dry mix. 1.0 (100%) outputs the fully denoised signal; 0.0 (0%) passes the original signal through unchanged. Values in between blend the two, which can help preserve naturalness when aggressive suppression causes artefacts.
type: float
readonly: no
required: no
minimum: 0.0
maximum: 1.0
default: 1.0
unit: ‘%’
scale: 100
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