EFD: Difference between revisions

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Vs. AFS: correction re: periodicity (thanks Flora!)
AD -> AFD
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An '''EFD''' ('''equal frequency division''') or '''AD''' ('''arithmetic division''') is a kind of [[Arithmetic tunings|arithmetic]] and [[Harmonotonic tunings|harmonotonic]] tuning in which each period is divided to a number of steps of equal frequency difference. It is a [[period]]ic [[tuning system]].
An '''EFD''' ('''equal frequency division''') or '''AFD''' ('''arithmetic frequency division''') is a kind of [[Arithmetic tunings|arithmetic]] and [[Harmonotonic tunings|harmonotonic]] tuning in which each period is divided to a number of steps of equal frequency difference. It is a [[period]]ic [[tuning system]].


== Specification ==
== Specification ==


Its full specification is ''n''-EFD-''p'' or ''n''-AD-''p'': ''n'' equal frequency divisions of ''p'', or ''n'' arithmetic divisions of ''p'' .  
Its full specification is ''n''-EFD-''p'' or ''n''-AFD-''p'': ''n'' equal frequency divisions of ''p'', or ''n'' arithmetic frequency divisions of ''p'' .  


== Formula ==
== Formula ==
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=== Vs. OD ===
=== Vs. OD ===


An [[OD|n-ODp]] is equivalent to an n-EFDp except that the period <math>p</math> of the OD must be rational.
An [[OD|''n''-OD-''p'']] is equivalent to an ''n''-EFD-''p'' except that the period <math>p</math> of the OD must be rational.


=== Vs. ELD ===
=== Vs. ELD ===
Retrieved from "https://en.xen.wiki/w/EFD"