When you are mixing with downward expansion and the downward expander creates holes during the fades at the ends of dialogue regions, what do you do?

4 Answers 4


When you are experiencing holes or gaps in the audio, use fills, turn the expansion down a notch or turn the expansion off alltogether. If it does too much, it might not be the right plugin at the moment. Too much processing is always worse than too little processing. You can always automate the bypass.

I normally don't use expanders, I manually write volume automation and use noise reduction instead. Should i use an expander, it would be a multiband expander like the Waves C4, it has a lot less of the "pumping" sound.

  • Waves C4 is totally worth it; i don't do a dialogue mix without it. Commented Mar 26, 2011 at 6:56
  • Would love to have a nice multiband expander but all i have is C4 compressor! I'll check, maybe its reversable.
    – Chris
    Commented Mar 26, 2011 at 8:06
  • That is the same C4. There is a preset which does noise reduction. You can start there. Commented Mar 26, 2011 at 10:49
  • @Chris - the C4 does compression and expansion. if you adjust the "range" setting of a band into positive numbers, it turns that band into an expander. Commented Mar 26, 2011 at 11:59

In my experience, it's best to use expansion on dialogue lightly; around 6dB max. And make sure your fill and/or sync fx tracks are going through the same expansion. That way, it should just rise and fall with the dialogue, and not draw attention to itself by pumping too much.


I concur with Rodger - try messing with the attack and release settings to slow up the drop.

The other option is to use fill between the dialog regions. This is the way I cut dialog. Grab some "room" from another take not used and fill in your gaps. This allows for a smooth scene.

  • Roger mentioned fill as well - just noticed ;)
    – C3Sound
    Commented Mar 26, 2011 at 5:22
  • Thanks. Yeah, grabbing the room and puttin it on the end but then the fade ends up adding a bump and it ruins everything.
    – Chris
    Commented Mar 26, 2011 at 8:05

aaand increase Release time a little.

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