Does anyone have the skinny on any software specifically set up to produce ison pitches for recording? I have to do periodic recording for students, etc/
You can use this program, some instructions hereand more. Unfortunately in Greek but you can understand the basic at least, if you are not fluent. If you are, good for you
Select advanced interface
Select instrument 33. Choir
Click vK to bring up virtual keyboard
Click Scale to define own scales
Play with octaves and reverb settings to get desired sound