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).