Use Silence Reduction to automatically remove silences from a sound. Use it to save storage space or to remove long pauses in speeches or police/airport radio recordings. Noise Reduction and Maximize Volume are recommended before using this effect to ensure a consistent silence level.
| Silence Reduction Settings | |
|---|---|
| Setting | Description |
| Silence threshold (dB) | Sets the volume level for the silence. Any audio below this level is considered silence and is subject to removal, provided it has a long enough duration. The Duration specifies how long the silence must be before it is reduced. Any silences short than this remain unchanged. |
| Duration (s) | Specifies how long the silence must be before it is reduced. Any silences shorter than this remain unchanged. |
| Reduce to (%) | Sets the length of the reduced silence relative to its original length. A value of 75, for example, reduces a 10 second silence to 7.5 seconds. |
| Maximum length (s) | Sets the maximum length for reduced silences. This setting overrides the Reduce to setting if the reduced length still exceeds the maximum. If this is set to 5 seconds in the above example, then the 10 second silence is reduced to 5 seconds. |
| Full crossfade | If is checked, the ends of the audio where silences were removed are gradually crossfaded over the entire length the remaining silence. If unchecked, a short crossfade of one-tenth of a second is used to join together non-silent sections where silences were removed. If there is a high level of background noise that varies, then full crossfade is recommended. However, if you hear unexpected overlapping fragments after removing silences, then this option should not be used. |
See Also: Find, Trim Silence, Noise Gate, Presets