User talk:Cam Taylor

Why do people keep calling 70 cents a minor second when it's clearly an augmented unison? Here are close–ups of 19edo, 31edo and 43edo:

C   C#  Db  D
0   63  126 189

C   .   C#  Db  .   D
0   39  77  116 155 194

C   .   .   C#  Db  .   .   D
0   28  56  84  112 140 167 195

It's clearly seen, that the 70—80 cent interval is C to C#, or an augmented unison. PiotrGrochowski (talk) 05:15, 29 September 2018 (UTC)

Unsure how to respond with a private message here, but you can get me easier on Facebook if you have it. C-C#, or an augmented unison is only the small semitone where perfect fifths are less than 700c. In every tuning where the perfect fifth is more than 700c (as here), the interval from C-C# will be greater than the interval from C#-D (minor second). This includes 17, 22, 27, 29, 34, 37, 41, 44, 46edos, which are not meantone tunings, like those you referred to, where the augmented unison is indeed the smaller semitone and the minor second the larger part. That is the case for all tunings within (4\7, 7\12), "negative tunings", as opposed to the "positive tunings" with fifths between (7\12, 3\5). Hope this helps to clarify. -Cam