im looking to use a vocoder to create a monster/demonic vocal. I have sampled the sound of a roaring fire and im looking to place a vocoder on the track, modulating it with my voice so the vocal articulates the fire sample, much in the same vein as this video : http://www.youtube.com/watch?v=d1Z_Rop_iGk
Now im using Logic and Ableton. I know how to set it up, but im having difficulty minimising the filtered vocoding effect. It sounds like its being played underwater and doesnt sound clean and i was wondering if anyone has any advice?