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Linear Temperament notations • Re: Notating 5-limit pental with added 7th harmonics

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After learning more about Sagittal and what's important in a sagittal notation I returned to research this question and decided to use :|~: and :)//|:. I uploaded my score to google drive https://drive.google.com/file/d/12afbOv ... sp=sharing and wrote there (in a separate document) my reason for the notation, copied below:
First of all I decided to use :/|:, ://|:, :|):, :|(: and :/|): for their obvious primary commas of 81/80, 6561/6400, 64/63, 5120/5103 and 36/35 respectively, but I still needed symbols for 525/512 and 413343/409600.
Having a notation with the visual symbol sizes being monotonic w.r.t. the corresponding commas' tempered sizes would necessarily contradict flag arithmetic, since, with the obvious symbols used, that would neccesitate using :)|: for 413343/409600 and :)//|: for 525/512, which would contradict flag arithmetic with ://|:. Also, :)|: has no comma whose tempered size is very close to that of 413343/409600 (8.825906 cents), with the closest one being 385/384 of :``::)|: which is tempered to 5.19482 cents, while :|(:'s primary comma, 5120/5103, which I already used, gives 9.911351 cents, a much closer value.
Now, while :~|: is the closest in visual size to :|(: after eliminating :)|: and has a secondary comma :.::~|: of 256/255 whose tempered size (7.468134 cents) is quite close to the tempered size of 413343/409600 (8.825906 cents), its size is still further from it than the tempered size of the primary comma of :|(:, 5120/5103 (9.911351 cents). However, :|~:, despite being further in visual size, has 413343/409600 as a secondary comma: :,,::|~:, and while :~|: is the semi-complement of :)//|:*, this is never actually seen in the score, since :)//||: would not be used and the apotome complement of :)//|: is actually :)|\\:. Also, with :)//|: justified by :,,::)//|: as 77/75, this keeps the whole notation 11-limit, which is quite elegant IMO. Another option would be :,::)//|: with a comma of 54675/53248, which has a closer tempered size but is 13-limit.

* Semi-complements is a term I use to describe symbols where one of them is visually the same as the apotome complement of the other but with a single shaft instead of a double shaft. By the rules of sagittal if two symbols have double shaft complements one of them looking like the complement of the other necessarily implies the second one also looks like the copmlement of the first.

Statistics: Posted by רועיסיני — Wed Sep 11, 2024 6:29 am



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