rsc3/doc-schelp/HelpSource/Classes/Pavaroh.schelp

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2022-08-24 13:53:18 +00:00
class:: Pavaroh
summary:: applying ascending and descending scales to event stream
categories:: Streams-Patterns-Events>Patterns>Math
description::
Basic classical indian scale pattern. Allowing to apply an ascending scale (aroh) and a descending scale (avaroh).
Note that no special pakads (movements) or vakras (twists) are applied.
The pakad is often a natural consequence of the notes of arohana / avarohana (ascending and descending structures). This is the purpose of this pattern.
Examples::
code::
(
Pbind(\note, Pavaroh(
Pseq([1, 2, 3, 2, 5, 4, 3, 4, 2, 1], 2),
#[0, 2, 3, 6, 7, 9],
#[0, 1, 3, 7, 8, 11]
),
\dur, 0.25
).play;
)
//___indian video game (1)
(
SynthDef("ivg", { arg out, freq=900, pan;
var trig, snd;
trig = Impulse.kr(LFClipNoise.kr(4, 3, LFClipNoise.kr(0.2, 2, 7)));
snd = RLPF.ar(
SinOsc.ar(freq, 0, Decay.kr(trig, 1.8)).distort
, 554, 0.3)
* 0.1;
Out.ar(out, Pan2.ar(snd, pan))
}).add;
)
(
var aroh, avaroh, synth, str, pat;
//gandhari raga. vadi: dha (7) samvadi: ga (3)
aroh = #[0, 2, 5, 7, 10];
avaroh = #[0, 1, 3, 5, 7, 9, 10];
synth = Synth.head(s, \ivg);
pat = Prand([0, 2, 3, 4, 2, 1, 0, -1, -2], inf);
str = Pavaroh(pat, aroh, avaroh).asStream;
Routine({
loop({
synth.set(\freq, midicps(str.next + 60) );
rrand([0.1,1.0].choose, 0.5).wait;
});
}).play;
)
::