Hallo Matt, Matt Barber hat gesagt: // Matt Barber wrote:
Attached is an inversion.pd which is a bit simpler -- usually when inverting in pitch (rather than pitch-class) it's easier/simpler/better to invert with respect to an axis of symmetry rather than with respect to the first pitch in the series (of course you can assign the first pitch as the axis).
Ah, that's much simpler indeed - and thanks a lot for your other explanations. I updated the code on http://footils.org/pkg/list-compose.tgz to include this as inversion-axis.pd and made the old inversion.pd a wrapper around this, which set the first note as the inversion axis.
(I made a little change to save the multiplication by 2 by using [swap] and a loadbang.)
If you think it would be useful I can put together the standard 12-tone operators in mod 12 (or for that matter, an assignable modulus), but of course specific register information disappears. A more interesting but more difficult project would be to write a list abstraction to output the set-class of a given set of pitches, with an assignable modulus.
I think, that would be an interesting project. I took the patches in my example from my port of KHz Essl's RTC lib (in row-modus.pd). Myself I'm not *that* familiar with 12-tone theory ...
Ciao
Frank Barknecht Do You RjDj.me? _ ______footils.org__