Noise Reduction
Reduces steady background noise such as hiss, hum, fans, and room tone. The effect continuously learns the noise level from the audio, so it does not require a separate noise sample.
Library location
Library → Audio Effect → Noise Reduction
Properties
Reduction (dB) (Reduction)
Maximum attenuation of detected noise. 0 leaves the audio unchanged. Higher values remove more noise but can make processing artifacts more audible.
- Type:
float - Default:
12 - Animatable: Yes
- Range:
[0, 48]
Sensitivity (dB) (Sensitivity)
How readily sound near the learned noise level is treated as noise. Raise it for fluctuating noise; lower it if quiet details such as breaths or consonants are lost.
- Type:
float - Default:
3 - Animatable: Yes
- Range:
[0, 24]
Smoothing (%) (Smoothing)
How smoothly the reduction changes over time. Higher values reduce warbling in the remaining noise; lower values react faster to quiet sounds.
- Type:
float - Default:
50 - Animatable: Yes
- Range:
[0, 100]
Adaptation Time (s) (Adaptation)
Length of past audio used to learn the noise level, in seconds. Sounds that sustain longer than this can also be treated as noise.
- Type:
float - Default:
2 - Animatable: Yes
- Range:
[0.5, 10]
Usage
Start with the defaults and listen for quiet details as you increase Reduction. Use a longer Adaptation Time for music with sustained notes, or a shorter time when the background noise changes.