Fri Nov 19, 2021 5:08 pm
Well, this must be at least a few years old, as Eric Dalest, who apparently made this organ using a CODM design software (for HW4.2) called Basilica, sadly passed away in 2016.
Looking around a bit on the link given in the video and simply downloading it one can find out a few things about it. The Basilica software can be used to create custom organs for Hauptwerk 4.x based on a set of samples contained within the package. These are sampled with 44.1k 16bit, they are quite short (around 2 seconds, reverb is cut after about 1.5 seconds), and there are only 2 samples/octave. All this explains the low memory usage.
The set and apparently also the software is still available, so you can simply download it and try it out.
Best regards
Reiner