On Sep 28, 9:37 am, Mr.SpOOn <[EMAIL PROTECTED]> wrote: > Hi, > I'm working on an application to analyse music (melodies, chord sequences > etc.) > > I need classes to represent different musical entities. I'm using a > class Note to represent all the notes. Inside it stores the name of > the natural version of the note (C, D, E, F...) and an integer to > calculate the accidentals. > > Then I have a class Pitch, to represent the different 12 pitch > classes, because different notes, such as C# and Db, belong to the > same pitch class. > > In these classes I also have some arithmetic method to perform > additions or subtractions between pitches and integers. > > I also need to represent intervals between notes. An interval must > have a degree (first, second, third), that may be represented with a > simple integer and a size counted in semitones. Then, with these > informations it can retrieve its name, for example: perfect fifth. > > The degree is calculated between natural notes. So the degree of > Interval(C, E) is "third", or 3. This may be simple, if I put the > notes in an ordered sequence. But, when I have to calculate, for > example Interval(E, C). It should count till the end of the sequence, > so if I have: > > C D E F G A B > > after the B it should continue with C. I'm not sure how to implement > this. Is there a suitable data structure for this purpose?
Hi, Here is a link to someone else's design they asked about on the newsgroup a couple weeks ago. http://groups.google.com/group/comp.lang.python/browse_thread/thread/ecffaa827984866d/921cba3084b984dc?lnk=st&q=sharpnote#921cba3084b984dc -- http://mail.python.org/mailman/listinfo/python-list
