2.1.11. Guard mode

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The guard mode combo-box allows you to choose how Loudness Leveler protects against unwanted gain artifacts during transients and tails using percentile guard bands over a rolling fast-loudness histogram.

• Disabled turns off all guard processing.
• Tail Guard holds the current gain when the fast loudness falls below the configured tail percentile, helping prevent the leveler from boosting into silence or reverb tails.
• Transient Guard holds the current gain when the fast loudness rises above the configured transient percentile, helping prevent the leveler from cutting into transient attacks.
• Dual Guard enables both Tail Guard and Transient Guard simultaneously.

Use tail percentile and transient percentile to set the guard bands, guard window to set the rolling histogram duration, and tail suppression to reduce held gain while tail guard is active.