Cool! I'll have fun playing with these examples. Thanks for the toot. ~Kyle
On Wed, Mar 18, 2009 at 3:38 AM, Frank Barknecht <f...@footils.org> wrote: > Hallo, > Frank Barknecht hat gesagt: // Frank Barknecht wrote: > > > - inversion: That's a bit more complicated. Quoting Wikipedia: > > > > Inverted melodies > > > > When applied to melodies, the inversion of a given melody is the > > melody turned upside-down. For instance, if the original melody has a > > rising major third (see interval), the inverted melody has a falling > > major third (or perhaps more likely, in tonal music, a falling minor > > third, or even some other falling interval). Similarly, in twelve-tone > > technique, the inversion of the tone row is the so-called prime series > > turned upside-down. > > http://en.wikipedia.org/wiki/Inversion_(music)#Inverted_melodies > > > > In inversion.pd this is realised by walking through the list with > > list-map, taking the difference between the current element and the > > previous element, then substracting this from the current element. > > The first element in a list is treated specially as it has no > > previous element (it's just copied). > > Ah, sorry: The patch is correct, but my explanation is wrong. Here's an > update: > > > In inversion.pd this is realised by walking through the list with > list-map. The > interval to use next is calculated by taking the difference between the > current > element and the previous element. This interval is substracted (not added, > because we are "retro"-grading) from the previous note, the resulting note > is > stored for the next step and inserted into the result list. The first > element > in a list is treated specially as it has no previous element: it's just > copied > and used as the starting note. > > Ciao > -- > Frank > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > -- ----- ------------ ---- ----- ---- -------- - ------ http://perhapsidid.wordpress.com http://myspace.com/kyleklipowicz
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