PFDO: Difference between revisions

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Created page with "{{stub}} '''pFDO''' (pth mean frequency division of the octave) refers to dividing the octave using power [https://en.wikipedia.org/wiki/Generalized_mean](means). p=0 correspo..."
 
Important to note "first octave".
 
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{{stub}}
A '''''p''-FDO''' ('''''p''-mean frequency division of the octave''') is a [[period]]ic [[tuning system]] which divides the [[octave]] using {{w|Generalized mean|power means}}. For example:
'''pFDO''' (pth mean frequency division of the octave) refers to dividing the octave using power [https://en.wikipedia.org/wiki/Generalized_mean](means). p=0 corresponds to [[EDO]], p=1 corresponds to [[AFDO]], and p=-1 corresponds to [[IFDO]]. The general formula for the ath interval of b-pFDO is equal to (a/b + 2<sup>p</sup> * (b-a)/b)<sup>1/p</sup>.
* ''p'' = 0 corresponds to [[EDO]],  
* ''p'' = 1 corresponds to [[AFDO]],  
* ''p'' = -1 corresponds to [[IFDO]].  
 
Except for the case where ''p'' = 0, the [[frequency ratio]] of the ''k''-th interval in the first octave of ''n''-''p''-FDO is  
 
$$\left( (n - k)/n + 2^p \cdot k/n \right)^{1/p}$$
 
[[Category:Acronyms]]
{{Todo| discuss title }}
 
 
{{Stub}}

Latest revision as of 11:54, 2 June 2024

A p-FDO (p-mean frequency division of the octave) is a periodic tuning system which divides the octave using power means. For example:

  • p = 0 corresponds to EDO,
  • p = 1 corresponds to AFDO,
  • p = -1 corresponds to IFDO.

Except for the case where p = 0, the frequency ratio of the k-th interval in the first octave of n-p-FDO is

$$\left( (n - k)/n + 2^p \cdot k/n \right)^{1/p}$$


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