Septischismic family: Difference between revisions
add-17 extensions, WIP, things to thread back |
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{{Main| Septischismic }} | {{Main| Septischismic }} | ||
The head of this family is septischismic ( | The head of this family is septischismic (formerly ''garischismic''), which is generated by a [[3/2|perfect fifth]] and an independent generator for [[5/4]]. Two [[Pythagorean apotome]]s i.e. 14 fifths octave-reduced make a [[8/7|septimal major second (8/7)]]. Equivalently stated, the [[7/4|harmonic seventh (7/4)]] is found at the double-diminished octave (C–C𝄫), or the minor seventh minus a generic comma step which stands in for both the Pythagorean comma and the septimal comma. | ||
Septischismic can be easily notated with [[chain-of-fifths notation]] with two additional sets of accidentals, one for the generic comma step, and the other for the generic aberschisma step which stands in for the [[schisma]] and the [[aberschisma]]. | Septischismic can be easily notated with [[chain-of-fifths notation]] with two additional sets of accidentals, one for the generic comma step, and the other for the generic aberschisma step which stands in for the [[schisma]] and the [[aberschisma]]. | ||
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Undecimal septischismic, a.k.a. cassaschismic, maps [[prime interval|prime]] [[11/1|11]] to +23 perfect fifths, so it is an [[expansion]] of the [[2.3.7.11 subgroup|2.3.7.11-subgroup]] version of [[gary]]. It is naturally a no-17 19-limit temperament, where the undevicesimal schisma of [[513/512]] is also added to the generic aberschisma step. | Undecimal septischismic, a.k.a. cassaschismic, maps [[prime interval|prime]] [[11/1|11]] to +23 perfect fifths, so it is an [[expansion]] of the [[2.3.7.11 subgroup|2.3.7.11-subgroup]] version of [[gary]]. It is naturally a no-17 19-limit temperament, where the undevicesimal schisma of [[513/512]] is also added to the generic aberschisma step. | ||
Septischismic has two reasonable extensions to add 17, which coalesce in the newt extension 270 & 311. Septinoellismic finds it a tad unintuitively as two aberschismas up and 4 commas down from a major second (^^4sM2) yet supported by 94edo, and septisperasmic finds it 4 aberschismas up from a minor second (4^m2), which can be deemed the more intuitive mapping, albeit it is not supported by any cassandra tuning except for 12edo, which notably has a very well tuned 17/16. | |||
Septischismic has two reasonable extensions to add 29 and 31 into the system, that like before, coalesce in the newt extension 270 & 311 too. Septiplanar finds them in the chain of fifths, without need of third generators, thus they in the same plane to the rank-2 chain of fifths, mapped respectively to a major seventh – three commas (3sM7) and a perfect octave minus two commas (hP8). Because this extension is reached only through the septischismic chain of fifths, it is also available in [[gary]]. | |||
[[Subgroup]]: 2.3.5.7.11 | [[Subgroup]]: 2.3.5.7.11 | ||
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Comma list: 2080/2079, 4096/4095, 19712/19683 | Comma list: 2080/2079, 4096/4095, 19712/19683 | ||
{{Mapping|legend=0| 1 0 0 25 -33 -13 | 0 1 0 -14 23 12 | 0 0 1 0 0 -1 }} | |||
Optimal tunings: | Optimal tunings: | ||
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Badness (Sintel): 0.815 | Badness (Sintel): 0.815 | ||
=== 2.3.5.7.11.13.19 subgroup === | ==== 2.3.5.7.11.13.19 subgroup ==== | ||
Subgroup: 2.3.5.7.11.13.19 | Subgroup: 2.3.5.7.11.13.19 | ||
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Badness (Sintel): 0.486 | Badness (Sintel): 0.486 | ||
=== | ===== Septiplanar ===== | ||
Subgroup: 2.3.5.7.11.13.19.29 | Subgroup: 2.3.5.7.11.13.19.29 | ||
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Optimal tunings: | Optimal tunings: | ||
* WE: ~2 = 1199. | * WE: ~2 = 1199.9476{{c}}, ~3/2 = 702.2134{{c}}, ~5/4 = 386.3794{{c}} | ||
: error map: {{val| -0.052 +0.206 -0.039 -0.389 +0.113 -0.190 -0.119 +0.603 }} | : error map: {{val| -0.052 +0.206 -0.039 -0.389 +0.113 -0.190 -0.119 +0.603 }} | ||
* CWE: ~2 = 1200. | * CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2440{{c}}, ~5/4 = 386.3884{{c}} | ||
: error map: {{val| 0.000 +0.289 +0.075 -0.242 +0.293 +0.012 +0.095 +0.860 }} | : error map: {{val| 0.000 +0.289 +0.075 -0.242 +0.293 +0.012 +0.095 +0.860 }} | ||
Optimal ET sequence | {{Optimal ET sequence|legend=0| 41, 53j, 94, 176, 217, 270, 487, 581j, 1068j }} | ||
Badness (Sintel): 0.758 | Badness (Sintel): 0.758 | ||
===== 2.3.5.7.11.13.19.29.31 subgroup ===== | ====== 2.3.5.7.11.13.19.29.31 subgroup ====== | ||
Subgroup: 2.3.5.7.11.13.19.29.31 | Subgroup: 2.3.5.7.11.13.19.29.31 | ||
| Line 147: | Line 113: | ||
Optimal tunings: | Optimal tunings: | ||
* WE: ~2 = 1199. | * WE: ~2 = 1199.9298{{c}}, ~3/2 = 702.2082{{c}}, ~5/4 = 386.4062{{c}} | ||
: error map: {{val| -0.070 +0.183 -0.048 -0.513 +0.173 -0.225 -0.136 +0.353 +0.633 }} | : error map: {{val| -0.070 +0.183 -0.048 -0.513 +0.173 -0.225 -0.136 +0.353 +0.633 }} | ||
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 702. | * CWE: ~2 = 1200.000{{c}}, ~3/2 = 702.2495{{c}}, ~5/4 = 386.4198{{c}} | ||
: error map: {{val| 0.000 +0.295 +0.106 -0.319 +0.421 +0.047 +0.154 +0.688 +0.976 }} | : error map: {{val| 0.000 +0.295 +0.106 -0.319 +0.421 +0.047 +0.154 +0.688 +0.976 }} | ||
Optimal ET sequence | {{Optimal ET sequence|legend=0| 41, 94, 135, 176, 217, 270, 311, 487, 581jk, 798k, 1068jk }} | ||
Badness (Sintel): 0.793 | Badness (Sintel): 0.793 | ||
=== Septifantasious === | ===== Septifantasious ===== | ||
Septifantasious tempers out [[1625/1624]] – the fantasia, and thus finds 29/16 as 3 aberschismas above 9/5 – that is to say, superminor seventh + 2 aberschismas (^^Sm7), and 31/16 one apotome higher as a hypermajor seventh + 2 aberschismas (^^HM7). | Septifantasious tempers out [[1625/1624]] – the fantasia, and thus finds 29/16 as 3 aberschismas above 9/5 – that is to say, superminor seventh + 2 aberschismas (^^Sm7), and 31/16 one apotome higher as a hypermajor seventh + 2 aberschismas (^^HM7). | ||
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Optimal tunings: | Optimal tunings: | ||
* WE: ~2 = 1199. | * WE: ~2 = 1199.9833{{c}}, ~3/2 = 702.2132{{c}}, ~5/4 = 386.1721{{c}} | ||
: error map: {{val| -0.017 +0.242 -0.175 +0.005 -0.246 -0.091 -0.291 +0.495 }} | : error map: {{val| -0.017 +0.242 -0.175 +0.005 -0.246 -0.091 -0.291 +0.495 }} | ||
* CWE: ~2 = 1200. | * CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2228{{c}}, ~5/4 = 386.1741{{c}} | ||
: error map: {{val| 0.000 +0.268 -0.140 +0.055 -0.193 -0.028 -0.225 +0.564 }} | : error map: {{val| 0.000 +0.268 -0.140 +0.055 -0.193 -0.028 -0.225 +0.564 }} | ||
Optimal ET sequence | {{Optimal ET sequence|legend=0| 41, 53, 94j, 217j, 258j, 270, 581j, 904, 945, 1215j }} | ||
Badness (Sintel): 0.716 | Badness (Sintel): 0.716 | ||
===== 2.3.5.7.11.13.19.29.31 subgroup ===== | ====== 2.3.5.7.11.13.19.29.31 subgroup ====== | ||
Subgroup: 2.3.5.7.11.13.19.29.31 | Subgroup: 2.3.5.7.11.13.19.29.31 | ||
| Line 188: | Line 154: | ||
: error map: {{val| 0.000 +0.264 -0.192 +0.110 -0.284 -0.023 -0.297 +0.358 +0.431 }} | : error map: {{val| 0.000 +0.264 -0.192 +0.110 -0.284 -0.023 -0.297 +0.358 +0.431 }} | ||
Optimal ET sequence | {{Optimal ET sequence|legend=0| 41, 53k, 94jk, 217jk, 229j, 270, 311, 581jk, 634, 904, 945, 1215jk }} | ||
Badness (Sintel): 0.796 | Badness (Sintel): 0.796 | ||
=== Septinoellismic === | |||
Subgroup: 2.3.5.7.11.13.17 | |||
Comma list: 1225/1224, 2080/2079, 2431/2430, 4096/4095 | |||
Subgroup-val mapping: {{mapping| 1 0 0 25 -33 -13 47 | 0 1 0 -14 23 12 -30 | 0 0 1 0 0 -1 2 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.9654{{c}}, ~3/2 = 702.2159{{c}}, ~5/4 = 386.2053{{c}} | |||
: error map: {{val| -0.035 +0.226 -0.178 -0.229 -0.006 -0.038 +0.252 }} | |||
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2359{{c}}, ~5/4 = 386.2080{{c}} | |||
: error map: {{val| 0.000 +0.281 -0.106 -0.129 +0.109 +0.096 +0.383 }} | |||
{{Optimal ET sequence|legend=0| 53, 94, 176g, 217, 270, 311, 487, 581 }} | |||
Badness (Sintel): 0.950 | |||
==== 19-limit ==== | |||
Subgroup: 2.3.5.7.11.13.17.19 | |||
Comma list: 1216/1215, 1225/1224, 1540/1539, 1729/1728, 2080/2079 | |||
Subgroup-val mapping: {{mapping| 1 0 0 25 -33 -13 47 -6 | 0 1 0 -14 23 12 -30 5 | 0 0 1 0 0 -1 2 1 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.9699{{c}}, ~3/2 = 702.2200{{c}}, ~5/4 = 386.2373{{c}} | |||
: error map: {{val| -0.030 +0.235 -0.137 -0.238 +0.044 -0.034 +0.286 -0.206 }} | |||
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2374{{c}}, ~5/4 = 386.2384{{c}} | |||
: error map: {{val| 0.000 +0.282 -0.075 -0.150 +0.143 +0.083 +0.399 -0.088 }} | |||
{{Optimal ET sequence|legend=0| 53, 94, 176g, 217, 270, 311, 487, 581 }} | |||
Badness (Sintel): 0.682 | |||
=== Septisperasmic === | |||
Subgroup: 2.3.5.7.11.13.17 | |||
Comma list: 2080/2079, 2500/2499, 4096/4095, 19712/19683 | |||
Subgroup-val mapping: {{mapping| 1 0 0 25 -33 -13 -48 | 0 1 0 -14 23 12 27 | 0 0 1 0 0 -1 4 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.9797{{c}}, ~3/2 = 702.2164{{c}}, ~5/4 = 386.2286{{c}} | |||
: error map: {{val| -0.020 +0.241 -0.126 -0.080 -0.136 -0.098 +0.068 }} | |||
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2281{{c}}, ~5/4 = 386.2332{{c}} | |||
: error map: {{val| 0.000 +0.273 -0.081 -0.020 -0.071 -0.023 +0.137 }} | |||
{{Optimal ET sequence|legend=0| 258, 270, 311, 581, 1485, 1796, 2066, 2647b }} | |||
Badness (Sintel): 1.76 | |||
==== 19-limit ==== | |||
Subgroup: 2.3.5.7.11.13.17.19 | |||
Comma list: 1216/1215, 1540/1539, 1729/1728, 2080/2079, 2500/2499 | |||
Subgroup-val mapping: {{mapping| 1 0 0 25 -33 -13 -48 -6 | 0 1 0 -14 23 12 27 5 | 0 0 1 0 0 -1 4 1 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.9861{{c}}, ~3/2 = 702.2198{{c}}, ~5/4 = 386.2353{{c}} | |||
: error map: {{val| -0.014 +0.251 -0.106 -0.056 -0.123 -0.084 +0.101 -0.193 }} | |||
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2278{{c}}, ~5/4 = 386.2383{{c}} | |||
: error map: {{val| 0.000 +0.273 -0.075 -0.015 -0.078 -0.032 +0.148 -0.136 }} | |||
{{Optimal ET sequence|legend=0| 258, 270, 311, 581, 1485, 1796, 2066 }} | |||
Badness (Sintel): 1.10 | |||
== Androschismic == | == Androschismic == | ||
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Comma list: 2080/2079, 10648/10647, 43904/43875 | Comma list: 2080/2079, 10648/10647, 43904/43875 | ||
{{Mapping|legend=0| 1 0 0 25 62 82 | 0 1 0 -14 -34 -43 | 0 0 1 0 -2 -3 }} | |||
Optimal tunings: | Optimal tunings: | ||
| Line 229: | Line 263: | ||
Comma list: 1216/1215, 2080/2079, 3136/3135, 10648/10647 | Comma list: 1216/1215, 2080/2079, 3136/3135, 10648/10647 | ||
{{Mapping|legend=0| 1 0 0 25 62 82 -6 | 0 1 0 -14 -34 -43 5 | 0 0 1 0 -2 -3 1 }} | |||
Optimal tunings: | Optimal tunings: | ||