[sc-users] Re: question about scale degrees in patterns

[jamshark70@xxxxxx]

shiihs wrote
> What is the rationale for not making 0.5 the note that sounds exactly
> half-way 0 and 1 (which can be different depending on the scale, octave,
> tuning, ...)?

FWIW, my ModalSpec class *does* divide the space between scale degrees
equally. Using a C harmonic minor scale, a chromatic scale would be

C = 0
C# = 0.5
D = 1
Eb = 2
E = 2.5
F = 3
F# = 3.5
G = 4
Ab = 5
A = 5 + (1/3)
Bb = 5 + (2/3)
B = 6
C' = 7

Well, you can guess the problem: If you start with a diatonic degree and you
only want to raise or lower it by a semitone, you have to add/subtract
either 1 or 1/2 or 1/3 depending on the starting degree. Transposition of
chromatically inflected materials is not arithmetically transparent.

At the time, I thought the equal division was better, but in hindsight, I
think I was wrong.

hjh



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