Hello Malte and Simon, I must apologize for the subject of this post being off-topic for this list, but you guys here are the best experts I can contact for such a specific question.
I’m programming a function computing the interval between two pitches, to display for example the inner intervals in chords. This way, the b-f’ in a g dominant chord <g b d’ f’> will show up as a diminished fifth. It's in this context that my question arose, for the sake of completeness of the code. I’ll thus return a non-value for such cases that don’t occur in real musical life. BTW, does anyone know whether/how Music21 support such a functionality? Sorry for not telling about the context beforehand, thanks for your help, and a nice day! JM > Le 20 mai 2018 à 12:16, Malte Meyn <[email protected]> a écrit : > > > > 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. > > _______________________________________________ > lilypond-user mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/lilypond-user _______________________________________________ lilypond-user mailing list [email protected] https://lists.gnu.org/mailman/listinfo/lilypond-user
