Deeptone: Difference between revisions
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'''Deeptone''' or '''tragicomical''' is a [[5-limit]] [[temperament]] generated by a fifth (~[[3/2]]), which is typically sharper than in 7edo but flatter than in [[flattone]] (approximately 686-691{{cent}}). The ~[[5/4]] is reached by eleven fifths octave-reduced, which is an augmented third ( | '''Deeptone''' or '''tragicomical''' is a [[5-limit]] [[regular temperament|temperament]] that [[tempering out|tempers out]] the [[comma]] [[177147/163840]]. It is generated by a fifth (~[[3/2]]), which is typically sharper than in [[7edo]] but flatter than in [[flattone]] or [[flattertone]] (approximately 686-691{{cent}}). The ~[[5/4]] is reached by eleven fifths octave-reduced, which is an augmented third (C–E♯). A characteristic feature of deeptone is that the [[81/80|syntonic comma]] is tuned negative, represented by a diminished unison (C–C♭). This means that ~[[81/64]] is a ''submajor third'', tuned flatter than ~[[5/4]], and ~[[32/27]] is a ''supraminor third'', tuned sharper than ~[[6/5]]. It has high [[error]] because of its flat tuning of 3/2, although the well-known [[mavila]] temperament has a 3/2 that is much flatter still. It is rated as high-[[badness]] by most badness metrics due to the combination of high [[error]] and high [[complexity]], but it is still of a low enough badness to be usable. Four edos support deeptone in their [[patent val]] ([[7edo]], [[33edo]], [[40edo]], and [[47edo]]), and additionally there is the near-patent val [[54edo|54b-edo]]. | ||
See [[Syntonic–chromatic equivalence continuum #Deeptone a.k.a. tragicomical]] for technical data. | |||
[[File:Deeptone7.mp3|none|thumb|Deeptone[7] major scale in 40edo.]] | |||
== Etymology == | == Etymology == | ||
''Deeptone'' was given by [[user:CompactStar|CompactStar]] in 2023, referring to the temperament featuring fifths even flatter than [[flattone]]. ''Tragicomical'' was allegedly given by [[groundfault]] no later than 2023.<ref>[https://en.xen.wiki/index.php?title=Talk:177147/163840&oldid=107105 Xenharmonic Wiki | Talk: 177147/163840]</ref> | ''Deeptone'' was given by [[user:CompactStar|CompactStar]] in 2023, referring to the temperament featuring fifths even flatter than [[flattone]]. ''Tragicomical'' was allegedly given by [[groundfault]] no later than 2023.<ref>[https://en.xen.wiki/index.php?title=Talk:177147/163840&oldid=107105 Xenharmonic Wiki | Talk: 177147/163840]</ref> | ||
== Extensions == | |||
Deeptone has an accurate [[13/8]], represented by the interval notated as a minor sixth, so it is very plausible to have a 2.3.5.13-[[subgroup]] [[extension]] tempering out both [[177147/163840]] and [[1053/1024]] (the tridecimal quartertone). This also gives a more simple interpretation of deeptone's major and minor thirds as tridecimal neutral thirds [[16/13]] and [[39/32]] respectively. Tuning this deeptone extension in [[40edo]] results in essentially perfect tuning of [[13/8]] and [[16/13]], which is inherited from [[10edo]]. | |||
== Scales == | |||
When properly tuned, Deeptone features [[mos scale]]s of the families [[2L 3s]], [[5L 2s]], [[7L 5s]], [[7L 12s]], and [[7L 19s]]. Another important scale, intermediate between the [[7L 5s]] and [[7L 12s]] scales, is the "Deeptone[14]" non-mos scale. This scale is notable for being the smallest deeptone scale that is generally "complete" for 5-limit purposes (as noted by [[groundfault]]) since Deeptone[12] has a paucity of 5-limit triads. Deeptone[14] is essentially just two interlaced Deeptone[7] diatonic scales with one of them being offset by an augmented unison above the other. | |||
== Interval chain == | |||
In the following table, prime harmonics and subharmonics are labeled in '''bold'''. | |||
{| class="wikitable center-1 right-2" | |||
|- | |||
! # | |||
! colspan="3" | Notation | |||
! Cents* | |||
! Approximate ratios (5-limit) | |||
! Additional ratios in 2.3.5.13 extension | |||
|- | |||
| 0 || perfect unison || P1 || C || 0.0 || [[1/1]] || | |||
|- | |||
| 1 || perfect 5th || P5 || G || 689.879 || '''[[3/2]]''' || | |||
|- | |||
| 2 || major 2nd || M2 || D || 179.758 || [[9/8]] || [[128/117]] | |||
|- | |||
| 3 || major 6th || M6 || A || 869.637 || [[27/16]] || [[64/39]] | |||
|- | |||
| 4 || major 3rd || M3 || E || 359.516 || [[81/64]] || '''[[16/13]]''' | |||
|- | |||
| 5 || major 7th || M7 || B || 1049.395 || [[243/128]] || [[24/13]] | |||
|- | |||
| 6 || aug 4th || A4 || G# || 539.274 || [[729/512]], [[320/243]] || [[18/13]] | |||
|- | |||
| 7 || aug unison || A1 || C# || 29.153 || [[2187/2048]], [[81/80|80/81]] || [[27/26]] | |||
|- | |||
| 8 || aug 5th || A5 || G# || 719.032 || [[40/27]] || | |||
|- | |||
| 9 || aug 2nd || A2 || D# || 208.911 || [[10/9]] || | |||
|- | |||
| 10 || aug 6th || A6 || A# || 898.79 || [[5/3]] || | |||
|- | |||
| 11 || aug 3rd || A3 || E# || 388.669 || '''[[5/4]]''' || | |||
|- | |||
| 12 || aug 7th || A7 || B# || 1078.548 || [[15/8]] || | |||
|- | |||
| 13 || doubly-aug 4th || AA4 || Fx || 568.427 || [[45/32]] || | |||
|} | |||
<nowiki/>* In 5-limit CTE tuning | |||
== Notes == | == Notes == | ||
<references /> | <references/> | ||
[[Category:Deeptone| ]] <!-- main article --> | [[Category:Deeptone| ]] <!-- main article --> | ||
[[Category:Rank-2 temperaments]] | |||