2.3.7/(1029/1024):修订间差异

来自律学维基
跳转到导航 跳转到搜索
无编辑摘要
 
(未显示同一用户的3个中间版本)
第15行: 第15行:
|-
|-
! 生程
! 生程
| style="background-color: #FFFFFF; font-weight: bold;" | 2, 8/7
| style="background-color: #FFFFFF; font-weight: bold;" | 2/1, 8/7
|}
|}


'''Slendric''', alternatively and originally named '''wonder''' by [[Margo Schulter]]<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_76975.html#77043 Yahoo! Tuning Group | ''Music Theory (was Re: How to keep discussions on-topic)''], and [https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_87455.html#88377 Yahoo! Tuning Group | ''The "best" scale.'']</ref>, or systematically '''gamelic''', is a [[regular temperament]] generated by [[8/7]], so that three of them stack to [[3/2]]. Thus the gamelisma, [[1029/1024]], is tempered out, which defines the [[gamelismic clan]]. Since 1029/1024 is a relatively small comma (8.4¢), and the error is distributed over a few intervals, slendric is quite an accurate temperament (approximating many intervals within 1 or 2 cents in optimal tunings).
8/7-3ed3/2律是2.3.7子群上的规则调律,其生程为8/7, 三个8/7表示一个3/2, 四个8/7表示一个12/7.


The disadvantage, if you want to think of it that way, is that approximations to the [[5/1|5th]] [[harmonic]] do not occur until you go a large number of generators away from the unison. In other words, the 5th harmonic must have a large [[complexity]]. Possible [[extension]]s of slendric to the full [[7-limit]] include [[mothra]], [[rodan]], and [[guiron]], where mothra tempers out [[81/80]], placing 5/1 at 12 generators (4 fifths) up; rodan tempers out [[245/243]], placing 5/1 at 17 generators up; and guiron tempers out the schisma, [[32805/32768]], placing 5/1 at 24 generators (8 fifths) down. [[Weak extension]]s such as [[miracle]] and [[valentine]] are somewhat more efficient, but they change the generator chain.
== 调音 ==
假设生程2/1(八度)是纯的,则2.3.7/(1029/1024)的调音完全由8/7的调音决定。


From there, it is easy to extend these temperaments to the [[11-limit]] since 1029/1024 factorizes in this limit into ([[385/384]])([[441/440]]), and so the logical extension of slendric is to temper out both commas; this places the interval of [[55/32]] at four generators up. Alternatively, giving 5/1 an independent generator and then tempering out 385/384 and 441/440 results in the rank-3 temperament [[portent]], the natural 11-limit [[expansion]] of slendric. Portent is [[support]]ed by the slendric extensions listed above.
下图为8/7, 7/6和3/2的误差与8/7的调音的关系,其中横坐标为8/7的调音([[音分]]值),纵坐标为误差(音分值),橙色点为最小化最大误差的调音,也就是1/4音差调音(8/7的调音为8/7 * (1029/1024)^(1/4),3/2的调音为3/2 / (1029/1024)^(1/4), 7/6是准确的),生程大小约为233.282¢.


This article concerns the basic [[2.3.7 subgroup]] temperament, slendric itself.
[[文件:误差.png]]


For technical data, see [[Gamelismic clan #Slendric]].
== 和弦 ==
将8/7叠加三遍,可以得到1-8/7-21/16-3/2[[本质调和和弦]],其相邻两音的音程为8/7,而根音与冠音之间的音程为3/2.
 
== 作品 ==
; Adriaan Fokker
* [https://www.huygens-fokker.org/music/rmten.html ''Tenacita'']
 
; Jan van Dijk
* [https://www.huygens-fokker.org/music/rmcap.html ''Capriccio'']
* [https://www.huygens-fokker.org/music/rmctta.html ''Canzonetta'']

2026年1月21日 (三) 14:32的最新版本

8/7-3ed3/2律
子群 2.3.7
音差 1029/1024
映射 [1 1 3; 0 3 -1]
平均律 36 & 41
生程 2/1, 8/7

8/7-3ed3/2律是2.3.7子群上的规则调律,其生程为8/7, 三个8/7表示一个3/2, 四个8/7表示一个12/7.

假设生程2/1(八度)是纯的,则2.3.7/(1029/1024)的调音完全由8/7的调音决定。

下图为8/7, 7/6和3/2的误差与8/7的调音的关系,其中横坐标为8/7的调音(音分值),纵坐标为误差(音分值),橙色点为最小化最大误差的调音,也就是1/4音差调音(8/7的调音为8/7 * (1029/1024)^(1/4),3/2的调音为3/2 / (1029/1024)^(1/4), 7/6是准确的),生程大小约为233.282¢.

将8/7叠加三遍,可以得到1-8/7-21/16-3/2本质调和和弦,其相邻两音的音程为8/7,而根音与冠音之间的音程为3/2.

Adriaan Fokker
Jan van Dijk