Pretty much every library should work at all the normal sample rates as far as I know. However in order for that to happen there is sample rate conversion taking place obviously. People seem to have widely different preferences in regard to sample rate issues: some want native sample rates to avoid conversions, others prefer using programs made at higher sample rates. So to accommodate the wide range in preferences some developers have opted to work in and sell in multiple sample rates. If you do a search you can probably find one of the many threads around here that discussed sample rate and SRC.
But yes, as you said, it's referring to the sample rate at which the programs in question were sampled.
To me it's a non-issue. There is a difference but it's not worth losing any sleep over. Programs that sound good still sound good after undergoing SRC. I work almost entirely in 48K (sometimes in 44.1 if no video is involved). For me sample rate has never been a consideration when purchasing a library. And I own a fair number of libraries in a wide variety of sample rates and sample rate choices. That said I sometimes buy the 96K library as well to check it out. Someone made an interesting point in a thread recently that the 88/96K test tones in Nat could have potentially different effects on circuits than the 44/48 tones; an interesting thought. Quite a few developers don't offer multiple sample rates so that makes the decision a bit more cut and dry.
The only issue loading a 96k library into a 44.1k project is the additional time needed for the SRC.
I have not A/B tested a particular project using both rates ... so many factors come into play, but without doubt, working at 96k is very enjoyable ... it's just not practical for my current rig.
Loading a 96k for a 44.1 library, I can't say that I feel a 'loss' of quality or anything. But then, using NEBULA as the foundation to any of my digital work has rendered many of my previous 'algo' plugs to the backseat. The ONLY 'algo' eq survivor has been DMG's EQuality ... and that feeds into a NEBULA pre-amp or compressor pre. Others are for specialty service such as d'essing, etc.
jpchartrand wrote:Maybe that's why I can only run ~8 instances on my pretty fast computer ??
Mmmmmmh, sounds strange... With my I7, Win7 64 bit and Reaper@44.1khz I can manage from 30 to 40 instances, so I suggest to check your configuration in the MAST page. Try with high DSPBUFFER values, both in Nebula and in the soundcard settings.
All instances are not created equal when it comes to resources. You can squeeze in a lot more low kernel programs than big fat 10 kernel ones, obviously. How many samples is part of the picture too I believe. 8 seems low but it actually does depend; 8 of those 10k Rayphlex comps would cause my computer to explode, for example.