Intermediate FL Studio Guide Create The Drake - Successful Effect

I know Drake uses Auto-tune on some of his songs, but on his new album a couple of the songs sound a little different. I understand the concept of layering audio tracks and using different effects such as reverb, expanders and eq's but it doesn't seem like i could achieve the same effect using just those methods. I like the way his vocals sound on a couple of the tracks, you can see that it sounds very mellow and ambient. I'm not sure how else to explain it.

how during the hook the whole beat goes into this sub effect where

all the high end frequencies are cut off (if i'm explaining it correctly technically).