I discovered these in the wee hours this morning, and haven't had a chance to delve too deeply, but I think this information should pinpoint the problems. I believe the bugs affect all dry section string samples for short+sustained, as well as dry solo samples. They do not seem present in the keyswitched section strings. My testing was all done on Dry/Vlns I/Short+Sustained, and are 100% reproducible.
It's my feeling that fixing these is crucial. I've always had some trouble getting good legato strings, and I think this finally tells me why.
With the legato layer active (pedal down), response to velocity appears to be suppressed. This in itself is consistent with the way the winds work, however it seems to give a default velocity that is somewhere in the mid-range, making every note accented. This is not usually what one wants when attempting to make legato strings. I've now discovered that the best legato strings are achieved without the pedal, and with all velocities set to 2. (Why not velocity=1?... see BUG #3). I suggest that the behavior for pedal-down passages should be completely suppress the short bow sample layer, unless it is the first note in a series (when velocity should be able to be set). The first note condition is necessary since portamento messages only work if the note is on the legato layer (See IMPLICATIONS).
With the legato layer active (pedal down), very long sustained notes are cut off after 8 seconds or so. I think the cut-off time depends on instrument and exact note. I can't recall if I checked this on section strings or not, but it is there for the strad solo for sure.
With the legato layer active (pedal down), velocities of 1 create no sound, regardless of mod-wheel setting. This one I can't recall if I tested on solo strings, so check on sections first.
While I'm happy that I've now found a workaround to my general legato problems (keep the pedal up, and set all velocities to 2), this completely destroys the interplay with the portamento control, which requires the pedal to be down. It is further complicated by the fact that in order to use portamento, the pedal must go down *before* the first note in the slide, meaning I am forced to use a default attack value for that note. It also means that the second note in a slide cannot be longer than 8 seconds or so.
Pentium 4, 2.3GHz, 1GB RAM
Windows XP Home
Sonar 5 PE
GPO as VST plugins