I know they aren't used often, but how do you abbreviate a doubly-, triply-, or otherwise multiply- diminished or augmented intervals? For instance, a perfect fifth is abnbreviated
P5, a diminished fifth is
d5, what is a doubly-diminished fifth? What about a quintuply diminished fifth (rare, esoteric, probably never has been or will be used? Yes; but sensical? Yes it is).
I was assuming either stacking them, like
AAA5 (but this gets cumbersome after a while), or prefixing the number behind it, like
3A5. I'm leaning towards the later because it is much more compact and manageable, but:
- Does that conflict with some other kind of notation that could possibly be mixed up with it?
- Would an experienced musician understand what it denotes?
For context, I'm writing some code that works with intervals, so I want it to be completely generic: my program shouldn't break just because somebody wants to use qradruple flats and 6-degree diminished intervals or something.