Unnoticeable comma: Difference between revisions

'''Unnoticeable commas''' are very small intervals. These [[comma]]s are called "unnoticeable" because, being equal to or less than 3.5 cents, they are smaller than the average peak [[just-noticeable difference]] (JND) of human pitch perception, as illustrated by the research of [[Aaron Andrew Hunt]]<ref>[http://musictheory.zentral.zone/huntsystem2.html#2 H-Pi Instruments | ''Hunt System Scale §The JND'']</ref>. It is improbable that even a trained listener would be able to notice these intervals, and as such they are a prime target for psychoacoustically informed [[microtempering]]. (However, a considerably larger comma can be unnoticeable in an [[adaptive just intonation|adaptive]] tuning context. Instead of one large pitch shift of the entire comma, there can be many small pitch shifts of a fraction of a comma, one per chord change. Given this, a noticeable 3-limit comma that arguably deserves inclusion is the [[mercator comma]], corresponding to using [[53edo]] for the circle of fifths.)  

| [[Hermann von Helmholtz]], [[Alexander Ellis]] (1875)

| [[Slendroschisma]], slendric schisma

| [[User:Xenllium|Xenllium]] (2024), <br>modified by [[Flora Canou]] (2025)

| [[Syntonoschisma]]

| [[User:Recentlymaterialized|Recentlymaterialized]] (2024)

| {{Monzo| -3 2 -2 0 0 -1 2 }}

| [[1197/1196|Rodessisma]]

| [[Lériendil]] (2025)

| 2.3.5.7.23 {{monzo| -6 -4 -1 2 2 }}