Bohpier: Difference between revisions
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'''Bohpier''' is a [[rank-2 temperament|rank-2]] [[regular temperament|temperament]] which can be described as the [[Bohlen–Pierce]] scale with [[2/1|octaves]]. From this strong relation it derives its name. In this temperament, like in Bohlen–Pierce, 13 generator steps give the [[3/1|3rd harmonic]], 19 give the [[5/1|5th harmonic]], and 23 give the [[7/1|7th harmonic]], [[tempering out]] the sensamagic comma ([[245/243]]) and the gariboh comma ([[3125/3087]]). The only difference is the addition of the [[period]] of an octave. | '''Bohpier''' is a [[rank-2 temperament|rank-2]] [[regular temperament|temperament]] which can be described as the [[Bohlen–Pierce]] scale with [[2/1|octaves]]. From this strong relation it derives its name. In this temperament, like in Bohlen–Pierce, 13 generator steps give the [[3/1|3rd harmonic]], 19 give the [[5/1|5th harmonic]], and 23 give the [[7/1|7th harmonic]], [[tempering out]] the sensamagic comma ([[245/243]]) and the gariboh comma ([[3125/3087]]). The only difference is the addition of the [[period]] of an octave. | ||
It is a member of [[sensamagic clan|sensamagic]], [[gariboh clan|gariboh]], [[arcturus clan|arcturus]], and [[mirkwai clan|mirkwai]] [[temperament families and clans|clans]] | It is a member of [[sensamagic clan|sensamagic]], [[gariboh clan|gariboh]], [[arcturus clan|arcturus]], and [[mirkwai clan|mirkwai]] [[temperament families and clans|clans]]. The [[extension]] to the [[13-limit]] sees more involvement of the octave, with 14 steps giving the interval class of [[11/1|11]] and 12 steps giving the interval class of [[13/1|13]], tempering out [[100/99]], [[144/143]], [[196/195]], and [[275/273]]. | ||
Possible generators for bohpier include [[13edt|1\13edt]], [[19ed5|1\19ed5]], and [[23ed7|1\23ed7]]. Another excellent tuning for the temperament is [[41edo]], with generator 5\41. [[Mos scale]]s of 8, 9, 17, 25, or 33 notes are available. | Possible generators for bohpier include [[13edt|1\13edt]], [[19ed5|1\19ed5]], and [[23ed7|1\23ed7]]. Another excellent tuning for the temperament is [[41edo]], with generator 5\41. [[Mos scale]]s of 8, 9, 17, 25, or 33 notes are available. | ||
| Line 7: | Line 7: | ||
See [[Sensamagic clan #Bohpier]] for technical data. | See [[Sensamagic clan #Bohpier]] for technical data. | ||
== | == Interval chain == | ||
Bohpier | In the following table, odd harmonics 1–13 and their inverses are in '''bold'''. | ||
{| class="wikitable center-1 right-2" | |||
|- | |||
! # | |||
! Cents* | |||
! Approximate ratios | |||
|- | |||
| 0 | |||
| 0.0 | |||
| '''1/1''' | |||
|- | |||
| 1 | |||
| 146.5 | |||
| 12/11, 13/12, 27/25 | |||
|- | |||
| 2 | |||
| 293.0 | |||
| 13/11 | |||
|- | |||
| 3 | |||
| 439.6 | |||
| 9/7 | |||
|- | |||
| 4 | |||
| 586.1 | |||
| 7/5 | |||
|- | |||
| 5 | |||
| 732.6 | |||
| 20/13 | |||
|- | |||
| 6 | |||
| 879.1 | |||
| 5/3 | |||
|- | |||
| 7 | |||
| 1025.7 | |||
| 9/5, 20/11 | |||
|- | |||
| 8 | |||
| 1172.2 | |||
| 39/20, 49/25, 55/28, <br>65/33, 77/39, 108/55 | |||
|- | |||
| 9 | |||
| 118.7 | |||
| 14/13, 15/14 | |||
|- | |||
| 10 | |||
| 265.2 | |||
| 7/6 | |||
|- | |||
| 11 | |||
| 411.8 | |||
| 14/11 | |||
|- | |||
| 12 | |||
| 558.3 | |||
| '''11/8''', 18/13 | |||
|- | |||
| 13 | |||
| 704.8 | |||
| '''3/2''' | |||
|- | |||
| 14 | |||
| 851.3 | |||
| '''13/8''', 18/11 | |||
|- | |||
| 15 | |||
| 997.8 | |||
| 25/14 | |||
|- | |||
| 16 | |||
| 1144.4 | |||
| 27/14, 35/18 | |||
|- | |||
| 17 | |||
| 90.9 | |||
| 21/20 | |||
|- | |||
| 18 | |||
| 237.4 | |||
| 15/13 | |||
|- | |||
| 19 | |||
| 383.9 | |||
| '''5/4''' | |||
|- | |||
| 20 | |||
| 530.4 | |||
| 15/11, 27/20 | |||
|- | |||
| 21 | |||
| 677.0 | |||
| 49/33 | |||
|- | |||
| 22 | |||
| 823.5 | |||
| 21/13 | |||
|- | |||
| 23 | |||
| 970.0 | |||
| '''7/4''' | |||
|- | |||
| 24 | |||
| 1116.6 | |||
| 21/11 | |||
|- | |||
| 25 | |||
| 63.1 | |||
| 25/24, 27/26, 33/32 | |||
|} | |||
<nowiki/>* In 13-limit CWE tuning | |||
=== As a detemperament of 8et === | |||
Bohpier can be considered as a [[cluster temperament]] with eight clusters of notes in an octave. The chroma interval between adjacent notes in each cluster represents 40/39 ~ 50/49 ~ 55/54 ~ 56/55 ~ 66/65 ~ 78/77 ~ 91/90 all tempered together. | |||
{| class="wikitable center-all" | |||
{| class="wikitable" | |||
|- | |- | ||
! rowspan="2" | Steps | ! rowspan="2" | Steps | ||
| Line 44: | Line 155: | ||
| 1 | | 1 | ||
| 17 | | 17 | ||
| | | 90.9 | ||
| | | 21/20 | ||
| 9 | | 9 | ||
| | | 118.7 | ||
| 15/14 | | 14/13~15/14 | ||
| 1 | | 1 | ||
| 146. | | 146.5 | ||
| 13/12 | | 12/11~13/12 | ||
| −7 | | −7 | ||
| 173. | | 173.3 | ||
| 11/10 | | 10/9~11/10 | ||
| −15 | | −15 | ||
| | | 202.2 | ||
| | | 28/25 | ||
| −23 | | −23 | ||
| | | 230.0 | ||
| 8/7 | | 8/7 | ||
|- | |- | ||
| 2 | | 2 | ||
| 18 | | 18 | ||
| | | 237.4 | ||
| 15/13 | | 15/13 | ||
| 10 | | 10 | ||
| | | 265.2 | ||
| 7/6 | | 7/6 | ||
| 2 | | 2 | ||
| 293. | | 293.0 | ||
| 13/11 | | 13/11 | ||
| −6 | | −6 | ||
| 320. | | 320.9 | ||
| 6/5 | | 6/5 | ||
| −14 | | −14 | ||
| | | 348.7 | ||
| 11/9~16/13 | | 11/9~16/13 | ||
| −22 | | −22 | ||
| | | 376.5 | ||
| | | 26/21 | ||
|- | |- | ||
| 3 | | 3 | ||
| 19 | | 19 | ||
| | | 383.9 | ||
| 5/4 | | 5/4 | ||
| 11 | | 11 | ||
| | | 411.8 | ||
| 14/11 | | 14/11 | ||
| 3 | | 3 | ||
| 439. | | 439.6 | ||
| 9/7 | | 9/7 | ||
| −5 | | −5 | ||
| | | 467.4 | ||
| 13/10 | | 13/10 | ||
| −13 | | −13 | ||
| | | 495.2 | ||
| 4/3 | | 4/3 | ||
| −21 | | −21 | ||
| | | 523.0 | ||
| | | 66/49 | ||
|- | |- | ||
| 4 | | 4 | ||
| 20 | | 20 | ||
| | | 530.4 | ||
| 15/11 | | 15/11 | ||
| 12 | | 12 | ||
| | | 558.3 | ||
| 11/8~18/13 | | 11/8~18/13 | ||
| 4 | | 4 | ||
| 586. | | 586.1 | ||
| 7/5 | | 7/5 | ||
| −4 | | −4 | ||
| 613. | | 613.9 | ||
| 10/7 | | 10/7 | ||
| −12 | | −12 | ||
| | | 641.7 | ||
| 13/9~16/11 | | 13/9~16/11 | ||
| −20 | | −20 | ||
| | | 669.5 | ||
| 22/15 | | 22/15 | ||
|- | |- | ||
| 5 | | 5 | ||
| 21 | | 21 | ||
| | | 677.0 | ||
| | | 49/33 | ||
| 13 | | 13 | ||
| | | 704.8 | ||
| 3/2 | | 3/2 | ||
| 5 | | 5 | ||
| | | 732.6 | ||
| 20/13 | | 20/13 | ||
| −3 | | −3 | ||
| 760. | | 760.4 | ||
| 14/9 | | 14/9 | ||
| −11 | | −11 | ||
| | | 788.2 | ||
| 11/7 | | 11/7 | ||
| −19 | | −19 | ||
| | | 816.1 | ||
| 8/5 | | 8/5 | ||
|- | |- | ||
| 6 | | 6 | ||
| 22 | | 22 | ||
| | | 823.5 | ||
| | | 21/13 | ||
| 14 | | 14 | ||
| | | 851.3 | ||
| 13/8~18/11 | | 13/8~18/11 | ||
| 6 | | 6 | ||
| 879. | | 879.1 | ||
| 5/3 | | 5/3 | ||
| −2 | | −2 | ||
| | | 907.0 | ||
| 22/13 | | 22/13 | ||
| −10 | | −10 | ||
| | | 934.8 | ||
| 12/7 | | 12/7 | ||
| −18 | | −18 | ||
| | | 962.6 | ||
| 26/15 | | 26/15 | ||
|- | |- | ||
| 7 | | 7 | ||
| 23 | | 23 | ||
| | | 970.0 | ||
| 7/4 | | 7/4 | ||
| 15 | | 15 | ||
| | | 997.8 | ||
| | | 25/14 | ||
| 7 | | 7 | ||
| | | 1025.7 | ||
| 9/5~20/11 | | 9/5~20/11 | ||
| −1 | | −1 | ||
| 1053. | | 1053.5 | ||
| 11/6~24/13 | | 11/6~24/13 | ||
| −9 | | −9 | ||
| | | 1081.3 | ||
| 13/7~28/15 | | 13/7~28/15 | ||
| −17 | | −17 | ||
| | | 1109.1 | ||
| | | 40/21 | ||
|} | |} | ||
<nowiki />* In 13-limit | <nowiki/>* In 13-limit CWE tuning | ||
== Chords == | == Chords == | ||