Tronquer le silence

Tronquer le Silence réduit automatiquement la longueur des passages où le volume est en-dessous d'un niveau de seuil paramétré.

Accessible par : Effets > Tronquer le Silence...

À travers cette description, les mots "silence" et "silencieux" signifient que les sons sont en dessous le paramètre de Seuil.

Durée mini du silence

Spécifie la durée la plus courte du silence qui sera tronquée par l'effet. Les passages silencieux de cette durée, ou plus longs, seront tronqués; les passages silencieux plus courts que cette durée seront conservés. Par défaut : 200 millisecondes.

Durée maxi du silence

Spécifie le silence possible résultant le plus long. Paramétrer ceci à la même valeur que le Mini réduira alors toujours le silence à cette durée. Par défaut : 1000 millisecondes.

Compression du silence

A compression factor which proportionally reduces silences in the waveform that are longer than the "min silence duration". This setting therefore has no effect if "min silence duration" is the same as or greater than "max silence duration". Default factor: 4:1, which compresses silence in excess of the min silence duration to a quarter of its original length. Note: the "max silence duration" setting is always respected, so that residual silence after truncation will never be longer than this even if the compression factor would otherwise produce a longer silence.

Seuil du silence

Audio at or below this amplitude will be regarded as "silence", so will be truncated. Default: -40 dB.

Exemples

• Simple usage: Setting both the Min and Max lengths to 5 milliseconds (ms) will truncate the silence to 5 ms. This is less than the length of a detectable silence, so will effectively eliminate it.

• Max length only: Set the compression factor to 1 (effectively disabling it). Now any silence longer than both the minimum and maximum length will be reduced to the maximum length.

• Proportional length only: Set the maximum to some large value, like 1000000. Now the part of any silence greater than the minimum length will be compressed by the compression factor.

• Proportional truncation with compression factor: The resulting silence is calculated according to the following formula:

(output silence length) = ((min) + ((input silence length) - min))/compression)

with the constraint that output must be less than the maximum length. So, setting the minimum to 33 ms and compression to 5:1, a silent passage 1033 ms long would be truncated to 233ms (33 + (1033-33/5)), unless the maximum was set to less than 233 ms. As a real world example, setting the minimum to 100 ms, the maximum to 5000 ms and the compression factor to 4:1 will have the effect of doubling the speed of a speech track with no pitch change, while keeping about the same cadence as the original.

Limitations

Truncate Silence only removes audio, it does not reduce or eliminate noise in the silent sections that it keeps.

Avoid using Truncate Silence on selections which have fade-outs or fade-ins, since it will reduce the quietest part of the fade in or fade out. If you need to add fades, apply Truncate Silence before adding fades.