I am a bit confused with audio levels for Dolby in Vegas. I have DV AVI files which are always low in volume. I have two good audio programs.

My normal method is to load the wave into Wavelab, PROCESS/ CHANGE GAIN and increase this to 0dB. Load this file into Vegas and encode to Dolby AC3 using the -27dB default. I uncheck the Dynamic range compression.

If I use Soundforge, I have different normalizing options which give different volume levels.

I'm unsure which levels I should be using.