@William said:
... the recorders are one solo library that actually does have zero phasing no matter how you crossfade them.
How is that possible, unless it leaps suddenly from one velocity layer to the next, instead of fading between them? Don't cross-fades by their very nature play two layers at the same time? Isn't playing two layers at the same time what Jimmy is refering to when he writes, "doubling/chorusing"?
VSL only recorded a single dynamic for the sustaining articulations of the recorders (although they recorded two different dynamics for the shorts e.g. staccato).
Hence the velocity xfade on sustaining articulations is never crossfading between two different recordings, and hence there is never any 'doubling' audible (because there isn't any). All the velocity xfade is effectively doing is turning up the volume with no change in timbre.
If you use velocity xfade on the short articulations of the recorders like staccato (not that you'd want to in practice - it is usually more intuitive to use velocity to control dynamics for short articulations) you WILL hear the doubling effect at the point where the two different dynamics recordings are heard at the same time.