Talk:Interval class

message: "For example, the interval class between pitch classes 4 and 9 is 5 because 9 - 4 = 5 is smaller than 4 - 9 = -3 ≡ 7. See modular arithmetic for more on modulo 12."
IMHO, 4 - 9 = -3 ≡ 9 (modulo 12), because -3 + 12 = 9. At least I hope I understand the article correctly (I am not completely sure, that's why I will not edit the article). -- Viliam Bur 195.46.70.44 13:17, 3 February 2006 (UTC)
thread_title: Error

message: Thank you for bringing that error to my attention!  I'm not sure how I arrived at 4-9=-3, but the answer, of course, is 4-9=-5, which is equivalent in mod 12 to 7.  Sorry about that.  And yes, -3 does equal 9 in mod 12.  Thanks again for noting that oversight.  Psfitzgibbon 03:45, 4 February 2006 (UTC)
thread_title:  Oops! 

message: The article uses the terms "diatonic" and "chromatic" without adequate explanation. These terms are the cause of serious uncertainties at several Wikipedia articles, and in the broader literature. Specifically here, diatonic is not necessarily an adequate gloss on heptatonic, especially given the way things are classified at the article Heptatonic (to which I have just provided a link). And even if diatonic is intended at the present article, that excludes other heptatonic scales from treatment here. But that can't be right! Some of us thought that both terms needed special coverage, so we started up a new article: Diatonic and chromatic. Why not have a look, and join the discussion? Be ready to have comfortable assumptions challenged!
– Noetica♬♩ Talk 06:12, 6 April 2007 (UTC)
thread_title: Diatonic and chromatic

message: On the (3) in the Use of interval class example, isn't the interval from F# to Db a perfect fifth?
Newsandpolitics  —Preceding comment was added at 02:46, 28 June 2008 (UTC)
replies: text: No. F# to Db isn't a perfect fifth. It's enharmonically equivalent to (it will sound the same as) a perfect fifth (Gb to Db, or F# to C#), but it's called a diminished sixth because of the note names that are used. In the tonal context, intervals are "numbered" (unison, second, third, fourth, fifth, etc.) by counting the note names (letters) included in the span, redardless of accidentals. Counting letters from F up to D results in six letter names (F, G, A, B, C, and D), so the interval is called some kind of sixth. The kind of sixth that it is depends on the real distance, which you can distinguish using semitones (half steps). A diminished sixth spans 7 semitones. So does a perfect fifth. Thus the easy confusion. --98.151.178.38 (talk) 05:09, 12 June 2012 (UTC)
thread_title: Use of interval class example

message: Please cite the exact paragraph not blatantly add a book name and assumed your interpretation of the context is correct. (WP:SYN) Interpretation between various people differs and wikipedia does require verification (WP:V) and detail evidence. (WP:REF- inline citation) --173.183.102.184 (talk) 23:25, 16 January 2010 (UTC)
replies: text: For your information, it is not customary to cite paragraphs when giving a reference citation. The citation you removed included a specific page reference, which is more than sufficient. I have restored the citation. If you have inspected the pages cited and find they do not support the claim, then please tag it with  and bring your explanation to this Talk page. As far as I can see, the definition of "interval class" cited in Whitall does not involve any interpretation or synthesis, and constitutes the "detail evidence" you seek. Personally, I can think of a number of books I would rather see cited on this subject than Whitall, but it is perfectly adequate for the purpose.—Jerome Kohl (talk) 01:33, 17 January 2010 (UTC)
thread_title:  citation removed 

message: There is a mistake with the graphic example in the "Use of interval classes" section. The text refers to the interval of a diminished sixth in example 3; however, the graphic depicts an interval from F to D, which is a major sixth.  The listening example clarifies that the graphic should depict a F to D, a dyad that would share "intervallic color" with the rest of the intervals provided. --Whygreen44 (talk) 07:47, 2 October 2014 (UTC)
replies: text: I see that this image was uploaded by User:Hyacinth. Perhaps he would like to make this correction himself?—Jerome Kohl (talk) 18:57, 2 October 2014 (UTC)
thread_title: Use of interval classes