Hmmm, Such a dissonance would be far better than to find disappointment in a dom whose bark is worse than his bite.
I find I get a big reaction from the smallest of change in vocal level.And you get to wonder what would happen if you didn't obey. I just find all of that subtler, and more satisfying, than raised voices and sharp orders. And then if a voice does get raised, or a command issued, it's much more meaningful.