Compression
Applying compression to your dialogue tracks, as well as the rest of your mix, tends to be a subjective matter. So let’s explore that for a moment…
Most every engineer uses compression; with a few carving themselves into this niche (in what has become popular over the years). Compression, gating and expansion all represent the dynamics family of processors by altering the dynamic range of your signal. When squashing your signal into a narrowed dynamic range, the audio is better controlled: it will fit into your mix easier and appear to sound more full.