Delta: Difference between revisions

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Created page with "The delta of a ratio is simply the difference between the numerator and the denominator. Thus superparticular ratios like 9/8 are delta-1 ratios. Ratios of the form <m..."
 
Disambiguate two scales called delta scale, add definition found on Tonalsoft Enyclopedia
 
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The delta of a [[ratio]] is simply the difference between the numerator and the denominator. Thus [[superparticular]] ratios like 9/8 are delta-1 ratios. Ratios of the form <math>\frac{n+2}{n}</math> like 7/5 are delta-2.
'''Delta''' may refer to:
{| class="wikitable"
 
|+
== Theory ==
!delta-1 ratios
* Delta, the frequency difference represented by an interval relative to its root, used to classify [[rational interval]]s as [[delta-N ratio]]s
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* Delta, the frequency difference represented by an interval relative to other intervals of a chord, used to notate the [[delta signature]] of [[delta-rational chord]]s
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* δ (lowercase delta), a note name used in certain [[musical notation]] systems to designate a note near D, but having a different musical function<ref>[[Tonalsoft Encyclopedia]]. ''[http://www.tonalsoft.com/enc/d/delta.aspx Delta]''.</ref>
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|5/4
== Scales ==
|6/5
* Delta scale, a mode of the [[Lambda]] scale in [[Bohlen-Pierce]] tuning
|7/6
* Delta scale, a scale equivalent to [[8ed16/15]]
|etc.
 
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== References ==
!delta-2 ratios
<references/>
|3/1
 
|5/3
{{Disambiguation}}
|7/5
|9/7
|11/9
|13/11
|etc.
|-
!delta-3 ratios
|4/1
|5/2
|7/4
|8/5
|10/7
|11/8
|etc.
|-
!delta-4 ratios
|5/1
|7/3
|9/5
|11/7
|13/9
|15/11
|etc.
|}
The term delta was coined by [[Kite Giedraitis]].