Harmonic entropy of just intervals: Difference between revisions

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This is a procedurally generated table of several hundred [[just intonation]] intervals between [[1/1]] and [[16/1]]: roughly evenly spaced with about one interval every 4-5 [[cents]].
This is a procedurally generated table of several hundred [[just intonation]] intervals between [[1/1]] and [[16/1]]: roughly evenly spaced with about one interval every 4–5 [[cents]].


The table shows how wide each interval is in cents, as well as showing its [[harmonic entropy]].
The table shows how wide each interval is in cents, as well as showing its [[harmonic entropy]].
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== Methodology ==
== Methodology ==
This table was made with [[Scale Workshop]]. It was made by starting with 1080ed16 ([[270edo]] but treating 16/1 as the [[period]]), then using "convert interval values>fraction" with a tolerance of 4.4 cents to convert all the intervals into the nearest simple just interval (according to Scale Workshop's default settings).  
This table was made with [[Scale Workshop]]. It was made by starting with 1080ed16 ([[270edo]] but treating 16/1 as the [[period]]), then using "convert interval values > fraction" with a tolerance of 4.4{{c}} to convert all the intervals into the nearest simple just interval (according to Scale Workshop's default settings).  


Then Scale Workshop's built-in harmonic entropy table was used to get the cents and the harmonic entropy, with all parameters left as default for the column "%, Rényi order 1.0", and all set to default except Réyni order for the column "%, Rényi order 7.0" (which was as the name suggests).
Then Scale Workshop's built-in harmonic entropy table was used to get the cents and the harmonic entropy, with all parameters left as default for the column "%, Rényi order 1.0", and all set to default except Réyni order for the column "%, Rényi order 7.0" (which was as the name suggests).


== Table of intervals ==
== Table of intervals ==
=== 1/1 to 2/1 ===
=== 1/1 to 2/1 ===
{| class="wikitable mw-collapsible sortable"
{| class="wikitable mw-collapsible sortable"
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 0 to 1200¢
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 0 to 1200{{c}}
|-
|-
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)
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=== 2/1 to 4/1 ===
=== 2/1 to 4/1 ===
{| class="wikitable mw-collapsible sortable"
{| class="wikitable mw-collapsible sortable"
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 1200 to 2400¢
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 1200 to 2400{{c}}
|-
|-
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)
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=== 4/1 to 8/1 ===
=== 4/1 to 8/1 ===
{| class="wikitable mw-collapsible sortable"
{| class="wikitable mw-collapsible sortable"
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 2400 to 3600¢
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 2400 to 3600{{c}}
|-
|-
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)
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=== 8/1 to 16/1 ===
=== 8/1 to 16/1 ===
{| class="wikitable mw-collapsible sortable"
{| class="wikitable mw-collapsible sortable"
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 3600 to 4800¢
|+ style="font-size: 105%;" | Harmonic entropy of just intervals size 3600 to 4800{{c}}
|-
|-
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)
! Just interval !! Size (cents) !! Entropy (Réyni 1.0) !! Entropy (Réyni 7.0)