Xen concepts for beginners: Difference between revisions

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[[Just intonation]] (JI) is the set of intervals that are tuned to rational frequency ratios, ones can be written as fractions of whole numbers.
[[Just intonation]] (JI) is the set of intervals that are tuned to rational frequency ratios, ones can be written as fractions of whole numbers.


The easiest way to get concordance (blending, buzzing chords) is to use low-numbered JI ratios in your interval or chord, for example [[3/2]] the just perfect fifth, [[5/4]] the just major third, and [[7/5]] the lesser septimal tritone. When pure JI ratios are used, the acoustic effect called JI buzz occurs. When the overall chord is low number JI, such as 8:9:10:11:12:13:14, the result is very concordant.
The easiest way to get concordance (blending, buzzing chords) is to use low-numbered JI ratios in your interval or chord, for example [[3/2]] the just perfect fifth, [[5/4]] the just major third, and [[7/5]] the lesser septimal tritone. When pure JI ratios are used, a psychoacoustic effect called JI buzz occurs. When the overall chord is low number JI, such as 8:9:10:11:12:13:14, the result is very concordant.


No edo interval except for the octave (2/1) and stacks of it is exact JI. A JI ratio might be far from a 12edo interval; for example 7/4 is 969 cents. This is another reason why JI is a common approach to xen.
No edo interval except for the octave (2/1) and stacks of it is exact JI. A JI ratio might be far from a 12edo interval; for example 7/4 is 969 cents. This is another reason why JI is a common approach to xen.