2.1.35. Low-level threshold
The low-level threshold parameter allows you to specify the loudness level below which the low-level type behavior is applied. This can be used to bypass or gate leveling when the source signal falls below a certain level, preventing the leveler from boosting noise or silence.
Use low-level knee to soften the transition into low-level behavior around the threshold.
This control is only enabled when low-level type is not set to Disabled.