[PD] www.pd-tutorial.com

[Kyle Klipowicz]

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 <fbar at 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
>
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