Am 20.05.2018 um 11:45 schrieb Menu Jacques:
Hello folks,
Working on intervals, I bump into this question.
How is the right column below to be filled?
Downward interval between B## and:
B#: augmented unison or minor second?
B: major second or ...?
Bb: minor third or ...?
Bbb: major third or ...?
Thanks for your help!
All of these are unisons:
B♯–B♯♯: augmented unison
B–B♯♯: double augmented unison
B♭–B♯♯: triple augmented unison
B♭♭–B♯♯: quadruple augmented unison
A pitch consists of three parts:
1. (I don’t know how it’s called correctly, maybe “diatonic name” or
something similar?): The “B” part in “B♯♯”
2. an accidental: the “♯♯”
3. the octave: the “4” in “B♯♯4”
Only part 1 and 3 decide whether you have a unison, second, third, fourth, …
But why would someone use such extreme intervals as B♭♭–B♯♯? The only
reason I can think of is temperaments of more than 12 pitches per octave.
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