R
RAMI
Guest
If you want a stereo sound out of a mono track, go with 2 mics and pan them. The copy/paste/shift thing sounds way to out of phase. You might be able to use a plugin like PhaseBug (BetabugsAudio ::lug-in development turned inside out::: all the way at the bottom) to get them in phase, but then it kind of takes away from the stereo effect.
Point being made - Double track unless you want it mono.
And if you want mono, you already have it without double-tracking.
It has nothing to do with phase or polarity. When you double, the signals are completely in phase with each other. The problem is that it's impossible to get stereo from mono. Period.