Sensamagic: Difference between revisions

Make the lattice a gallery; improve linking and wording; +link to sensamagic dominant chord
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The '''sensamagic''' temperament is the [[rank-3 temperament]] [[tempering out]] [[245/243]], the sensamagic comma. It has a canonical 11-limit [[extension]] adding [[385/384]] and [[896/891]] to the comma list.  
'''Sensamagic''' is the [[Rank-3 temperament|rank-3]] [[temperament]] [[tempering out]] [[245/243]], the sensamagic comma. It has a canonical 11-limit [[extension]] adding [[385/384]] and [[896/891]] to the comma list.  


The temperament was named after the corresponding comma, which was named by [[Gene Ward Smith]] in 2010. See [[245/243 #Etymology]].  
The temperament was named after the corresponding comma, which was named by [[Gene Ward Smith]] in 2010. See [[245/243 #Etymology]].  
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== Interval lattice ==
== Interval lattice ==
[[File:Lattice_Sensamagic.png]]
<gallery>
File:Lattice_Sensamagic.png|11-limit sensamagic
</gallery>


== Notation ==
== Notation ==
Sensamagic can be notated the same as 2.3.7 [[just intonation]] since they share the same lattice structure.  
Sensamagic can be notated the same as 2.3.7 [[just intonation]] since they share the same lattice structure. One way to do this is to take the conventional [[circle-of-fifths notation]] with an additional module of accidentals for the [[64/63]] comma. In this system, 7/4 is a minor seventh, 5/4 an augmented second, and 11/8 a diminished fifth.  


One way to do this is to take the conventional [[circle-of-fifths notation]] with an additional module of accidentals for the [[64/63]] comma. In this system, 7/4 is a minor seventh, 5/4 an augmented second, and 11/8 a diminished fifth.
{| class="wikitable center-1 center-3"
 
{| class="wikitable center-all"
|+Sensamagic nomenclature<br>for selected intervals
|+Sensamagic nomenclature<br>for selected intervals
! Ratio
! Ratio
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|-
|-
| 5/4
| 5/4
| Double up augmented 2nd
| Double-up augmented 2nd
| C-^^D#
| C-^^D#
|-
|-
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|}
|}


Alternatively, it can be notated the same as full prime-limit just intonation, with a distinct accidental module for each prime harmonic. That makes some intervals more intuitive, at the cost of hiding the structure of sensamagic tempering. For example, it is customary of the 5/4 to be a major third, and 7/4 to be a minor seventh. As a result, the fact that the 5/3 is a stack of two 9/7's is not revealed, and the related chords can be confusing.
Alternatively, it can be notated the same as full prime-limit just intonation, with a distinct accidental module for each prime harmonic. That makes some intervals more intuitive, at the cost of hiding the structure of sensamagic tempering. For example, it is customary of the 5/4 to be a major third, and 7/4 to be a minor seventh. As a result, the fact that the 5/3 is a stack of two 9/7's is not revealed, and the related chords can be less convenient.


== Chords ==
== Chords ==
Sensamagic enables [[essentially tempered chord]]s of [[Sensamagic chords|sensamagic]], [[Keenanismic chords|keenanismic]], [[Pentacircle chords|pentacircle]], and [[Undecimal sensamagic chords|undecimal sensamagic]].  
Sensamagic enables [[essentially tempered chord]]s of [[Sensamagic chords|sensamagic]], [[Keenanismic chords|keenanismic]], [[Pentacircle chords|pentacircle]], and [[Undecimal sensamagic chords|undecimal sensamagic]].  
The [[sensamagic dominant chord]] is a dominant seventh chord useful for tonal harmony in this temperament.


[[Category:Temperaments]]
[[Category:Temperaments]]