Thanks, its good idea. But here in graphical mode it can be made much more detailed. And its imprtant for vibrato and tremolo to be fully synchronous. Besides, source vocal often already has natural vibrato and I need only to correct or strengthen vibrato. Adjusting predelay and rate I see visually how synth vibrato interferate with natural. If in wrong phase , they can “kill” each other. Controlling it visually I can get best results.