> On 30.12.2017, at 12:32, stefaan.himpe@xxxxxxxxx wrote: > > ddw_music wrote >> >> shiihs wrote >>> As I found out recently, to my surprise, a scale degree behaves >>> counterintuitive in patterns. >>> By adding +/- 0.1, you add/subtract a semitone. >>> 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, ...)? >> Because you can't assume that 2 will always be the largest number of >> chromatic divisions between scale degrees. For instance, in C harmonic >> minor, there's Ab (degree 5 in SC) and B-natural (degree 6). What would >> 5.5 be in this case? >> >> It's really necessary to be able to distinguish between "up a chromatic >> unit" and "down a chromatic unit.” In sclang, by convention, fractional degrees represent accidentals which are measured by semitones. This is just a convenient way to express deviations from a given scale. It is really just a way to be able to implement notation like 3b or 7s.
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