Have you ever wanted a vocal sound which seems to float in front of you? Here's one way of achieving this.

1) Create an auxiliary or effect channel and put a delay on it which allows for independent left and right delay settings.
2) Delay the left by 30ms and the right by 15ms.
3) If your effects unit also allows independent pitch shift then try pitching the left up +9cents and the right down -9cents.

Send some of your vocal track to this auxiliary or effects channel and blend to taste. This is often to the point where you can sense that the effect is there but can’t really "hear" it working.

I like to use the Waves Doubler plug-in to achieve this effect.