Sagittal notation: Difference between revisions
Dave Keenan (talk | contribs) |
Dave Keenan (talk | contribs) Changed most occurrences of "diacritic" to "accent" for consistency with https://sagittal.org/sagittal.pdf and the Sagitype wiki article, although we are stuck with "diacritic" in the SMuFL documentation. Made the accents a separate gallery and made it default to collapsed, consistent with the Sagitype wiki article. |
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=== Herculean === | === Herculean === | ||
It adds the [[schisma]] diacritic to the Promethean symbol set, which can be stacked with the remaining alterations, allowing for a maximum resolution of 58EDA, of which a great edo is [[612edo|612]]. When used for JI, it defines the ''Standard Ultra Precision JI'' capable of writing in the 23-limit with higher precision. | It adds the [[schisma]] accent (a diacritic) to the Promethean symbol set, which can be stacked with the remaining alterations, allowing for a maximum resolution of 58EDA, of which a great edo is [[612edo|612]]. When used for JI, it defines the ''Standard Ultra Precision JI'' capable of writing in the 23-limit with higher precision. | ||
=== Olympian === | === Olympian === | ||
It adds the [[4096/4095|''mina'']] | It adds the [[4096/4095|''mina'']] accent to the Herculean symbol set, able to be stacked up to twice with the schisma and the remaining alterations, allowing for a maximum resolution of 233EDA, The zeta peak [[2460edo]] has been used as a base to define the mina as an interval measure, and the Olympian set of intervals generally, due to its extremely precise 27-odd-limit palette. When used for JI, it defines the ''Standard Extreme Precision JI'' capable of writing in the [[47-limit]] with great precision. It also is the smallest precision level that has an "exact" mapping for prime 13, thanks to the mina's appearance. 13/8 is now written as a major sixth minus the 35 large diesis and a mina. From C, this would be C - A{{sagittal|,}}{{sagittal|(!/}} . | ||
=== Magrathean === | === Magrathean === | ||
It adds the ''tina'' | It adds the ''tina'' accent to the Olympian symbol set, able to be stacked up to thrice with any of the symbols (three tinas make a ~mina), allowing for a whopping maximum resolution of 809EDA. The strict zeta peak [[8539edo]] has been used to define the tina as an interval measure, due its insanely precise 27-odd-limit (and beyond) interval palette. When used for JI, it defines the ''Standard Insane Precision JI'' capable of writing in the 127-limit with astonishing precision. There is no level of precision higher than this, and it is unlikely that one will ever exist. Unless you want some hot sauce.<ref name=":0">https://forum.sagittal.org/viewtopic.php?p=2714&hilit=bomb#p2714 "A tina is approximately 1/809th of an apotome, 1/8539th of an octave (a [[Zeta peak edo|zeta-peak EDO]]), or 0.14 cents. The fractional-tina is generally half a tina but is intentionally arbitrary, because if you need any more precision than that, I have a bottle of Da' Bomb Beyond Insanity Hot Sauce with your name on it"</ref> | ||
== Prime approximations == | == Prime approximations == | ||
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Tempered systems might yield better or worse approximations to each just interval. Used for JI, only some non-Pythagorean intervals in the 23-limit will ever be exact. The error gets increasingly small however, down to hundredths of a cent in Magrathean. | Tempered systems might yield better or worse approximations to each just interval. Used for JI, only some non-Pythagorean intervals in the 23-limit will ever be exact. The error gets increasingly small however, down to hundredths of a cent in Magrathean. | ||
== Gallery == | == Gallery of core accidentals == | ||
=== Spartan single-shaft === | === Spartan single-shaft === | ||
{{sge| ¦( | !( | n | 5120/5103 | 7/5 kleisma }} | {{sge| ¦( | !( | n | 5120/5103 | 7/5 kleisma }} | ||
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{{sge| (X~ | (Y~ | r | 81/76 | 19s }} | {{sge| (X~ | (Y~ | r | 81/76 | 19s }} | ||
=== Herculean extension | == Gallery of accents == | ||
Fine-grained Sagittal notations starting with Herculean can use accents, also called diacritics, to the left of a sagittal or a bare shaft, to indicate very subtle distinctions in pitch. | |||
<div class="mw-collapsible mw-collapsed"> | |||
=== Herculean extension accents === | |||
{{sge| ¦ | ! | ⁠ | 1/1 | shaft }} | {{sge| ¦ | ! | ⁠ | 1/1 | shaft }} | ||
Ai and ao are not | Ai and ao are not accents but bare shafts which do not alter the pitch. They are used when there would otherwise be bare accents. | ||
{| class="wikitable" | {| class="wikitable" | ||
|- style="text-align: center;" | |- style="text-align: center;" | ||
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|5s down | |5s down | ||
|} | |} | ||
The interval is called a "schisma". The | The interval is called a "schisma". The accent's shape is called "tick" (up or down). | ||
=== Olympian extension | === Olympian extension accents === | ||
{| class="wikitable" | {| class="wikitable" | ||
|- style="text-align: center;" | |- style="text-align: center;" | ||
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The average unit interval is called a "mina" (rhymes with ballerina) and is approximately 0.42 of a cent. The shapes are called "wing" and "bird". | The average unit interval is called a "mina" (rhymes with ballerina) and is approximately 0.42 of a cent. The shapes are called "wing" and "bird". | ||
=== Magrathean extension | === Magrathean extension accents === | ||
{| class="wikitable" | {| class="wikitable" | ||
|- style="text-align: center;" | |- style="text-align: center;" | ||
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|77/(5⋅37)n down | |77/(5⋅37)n down | ||
|} | |} | ||
The average unit interval is called a "tina" (rhymes with ballerina) and is approximately 0.14 of a cent. The new shapes are called "horn" and "wedge". Notice how 3 tinas is ''approximately'' equal to one mina, so the system just equates the 3. Either way, this is an ''insane'' level of pitch precision. The "i/o" | The average unit interval is called a "tina" (rhymes with ballerina) and is approximately 0.14 of a cent. The new shapes are called "horn" and "wedge". Notice how 3 tinas is ''approximately'' equal to one mina, so the system just equates the 3. Either way, this is an ''insane'' level of pitch precision. The "i/o" accent, whose shape is called "dot", represents some unit fraction of a tina, often a half as shown, but it is intentionally left to be defined by the user.<ref name=":0" /> | ||
</div> | |||
== See also == | == See also == | ||