144/125: Difference between revisions

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+name and explain the idea behind them; remove comma tag cuz it's pretentious
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'''144/125''', the '''classic diminished third''', about 245 [[cent]]s in size, is a just interval in the [[5-limit]]. It can be obtained by subtracting [[6/5]], the classic minor third, by [[25/24]], the classic chroma. It is also the Pythagorean diminished third (65536/59049) flattened by three [[81/80|syntonic commas]], which lends itself to the term ''triptolemaic''.  
'''144/125''', the '''classic diminished third''', about 245 [[cent]]s in size, is a just interval in the [[5-limit]]. It can be obtained by subtracting [[6/5]], the classic minor third, by [[25/24]], the classic chroma. It is also the Pythagorean diminished third (65536/59049) flattened by three [[81/80|syntonic commas]], which lends itself to the term ''triptolemaic''.  
In any [[kleismic]] system, it is tuned to an exact semifourth, tempered together with [[125/108]]. The [[university temperament]] treats it as a comma.


== Approximation ==
== Approximation ==
This interval is especially close to the 10th step of [[49edo]].  
This interval is especially close to the 10th step of [[49edo]].  
== Temperaments ==
In any [[kleismic]] system, it is tuned to an exact semifourth, tempered together with [[125/108]]. The [[university]] temperament treats it as a [[comma]].


== See also ==
== See also ==

Latest revision as of 10:24, 1 January 2025

Interval information
Ratio 144/125
Factorization 24 × 32 × 5-3
Monzo [4 2 -3
Size in cents 244.9689¢
Names classic(al) diminished third,
triptolemaic diminished third
Color name g33, trigu 3rd
FJS name [math]\displaystyle{ \text{d3}_{5,5,5} }[/math]
Special properties reduced
Tenney norm (log2 nd) 14.1357
Weil norm (log2 max(n, d)) 14.3399
Wilson norm (sopfr(nd)) 29

[sound info]
Open this interval in xen-calc

144/125, the classic diminished third, about 245 cents in size, is a just interval in the 5-limit. It can be obtained by subtracting 6/5, the classic minor third, by 25/24, the classic chroma. It is also the Pythagorean diminished third (65536/59049) flattened by three syntonic commas, which lends itself to the term triptolemaic.

Approximation

This interval is especially close to the 10th step of 49edo.

Temperaments

In any kleismic system, it is tuned to an exact semifourth, tempered together with 125/108. The university temperament treats it as a comma.

See also