I am not sure if this message is in the right forum, it concerns the use of vibrato in real life. I am using the Strad.
Listening to some great CD's to get the idea of vibrato I noticed that when a new note is "hit" it takes a while to hear the vibrato. And then it is gradually getting faster and less with frequency "sweeps". At the end of the note the vibrato is fading, as if the violist prepares to get the next note.
If this is true and if I hear it right, then one has to introduce the vibrato after the start of the note and end it before the start of the next note. The vibrato speed increases along the duration of the note and decreases to the end, as well as the depth.
So every note must be drawn in Sonar with controller info (CC#1 and Aftertouch) more like the shape of a block wave, just a little bit smaller than the span of the note duration.
Am I right about that?