Scale larger then octave

1

Hello, ist Scale restricted to scales that repeat after one octave, or can it be used for intevallic structures that repeat after multiple octaves or even any interval? Thanks

2

yes you can have scales with larger or smaller octaves -
you do this by using a stretched or shrunk octave Tuning - Tunings are created with an octaveRatio argument…

Scale.all.put(\test, Scale((0..11),12, Tuning((0..11)*3/2 ,octaveRatio:3))) 
Scale.test.ratios.do(_.postln)
Pbind(\degree,Pseq((0..12),inf),\scale,Scale.test,\dur,0.3).play
1 Like
3

Thanks - will have a look into that.
you might have a typo in there - should be “\dur, 0.3” not “dur: 0.3”

1 Like
4

Hello - I run into trouble with this method when creating midi files - any idea what happens here?

(
// create a chord form a scale that is larger then an octave:
Scale.all.put(\test, Scale((0..11), 12, Tuning(Array.series(12, 0, 3), octaveRatio: 8)));

a = Pbind(
	\dur, Pseq([1/4], 4),
	\degree, Pseries(),
	\scale, Scale.test,
	\root, -24,
);

f=SimpleMIDIFile("~/tmp.mid");
f.fromPattern(a);
f.write;

)

(
// test it:
a.play; // plays back dimished chord
f.plot; // shows diminished chords
f.midiEvents.dopostln; // shows diminished chords
)

(
// test the created midi-file:
f = SimpleMIDIFile.read("~/tmp.mid");
f.midiEvents.dopostln; // different notes - why?
)