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Merge pull request #162 from larkob/euclidian

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update to tutorial documentation
This commit is contained in:
Felix Roos 2022-07-28 19:26:41 +02:00 committed by GitHub
commit 71dc108b2d
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3 changed files with 19 additions and 22 deletions
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7
packages/core/pattern.mjs
View File

@ -1014,13 +1014,6 @@ export class Pattern {
return this._chunk(n, func, true);
}
edit(...funcs) {
return stack(...funcs.map((func) => func(this)));
}
pipe(func) {
return func(this);
}
_bypass(on) {
on = Boolean(parseInt(on));
return on ? silence : this;

4
repl/src/tunes.mjs
View File

@ -306,7 +306,7 @@ const drums = stack(
const thru = (x) => x.transpose("<0 1>/8").transpose(-1);
const synths = stack(
"<eb4 d4 c4 b3>/2".scale(timeCat([3,'C minor'],[1,'C melodic minor']).slow(8)).struct("[~ x]*2")
.edit(
.layer(
scaleTranspose(0).early(0),
scaleTranspose(2).early(1/8),
scaleTranspose(7).early(1/4),
@ -517,7 +517,7 @@ const snare = noise({type:'white',...adsr(0,0.2,0)}).chain(lowpass(5000),vol(1.8
const s = polysynth().set({...osc('sawtooth4'),...adsr(0.01,.2,.6,0.2)}).chain(vol(.23).connect(delay),out());
stack(
stack(
"0 1 4 [3!2 5]".edit(
"0 1 4 [3!2 5]".layer(
// chords
x=>x.add("0,3").duration("0.05!3 0.02"),
// bass

30
tutorial/tutorial.mdx
View File

@ -32,14 +32,14 @@ const drums = stack(
const thru = (x) => x.transpose("<0 1>/8").transpose(-1);
const synths = stack(
"<eb4 d4 c4 b3>/2".scale(timeCat([3,'C minor'],[1,'C melodic minor']).slow(8)).struct("[~ x]\*2")
.edit(
.layer(
scaleTranspose(0).early(0),
scaleTranspose(2).early(1/8),
scaleTranspose(7).early(1/4),
scaleTranspose(8).early(3/8)
).edit(thru).tone(keys).bypass("<1 0>/16"),
"<C2 Bb1 Ab1 [G1 [G2 G1]]>/2".struct("[x [~ x] <[~ [~ x]]!3 [x x]>@2]/2".fast(2)).edit(thru).tone(bass),
"<Cm7 Bb7 Fm7 G7b13>/2".struct("~ [x@0.1 ~]".fast(2)).voicings().edit(thru).every(2, early(1/8)).tone(keys).bypass("<0@7 1>/8".early(1/4))
).layer(thru).tone(keys).bypass("<1 0>/16"),
"<C2 Bb1 Ab1 [G1 [G2 G1]]>/2".struct("[x [~ x] <[~ [~ x]]!3 [x x]>@2]/2".fast(2)).layer(thru).tone(bass),
"<Cm7 Bb7 Fm7 G7b13>/2".struct("~ [x@0.1 ~]".fast(2)).voicings().layer(thru).every(2, early(1/8)).tone(keys).bypass("<0@7 1>/8".early(1/4))
)
stack(
drums.fast(2),
@ -175,11 +175,21 @@ Using "!" we can repeat without speeding up:
In essence, the `x!n` is like a shortcut for `[x*n]@n`.
## Euclidian
Using round brackets, we can create rhythmical sub-divisions based on three parameters: beats, segments and offset.
The first parameter controls how may beats will be played.
The second parameter controls the total amount of segments the beats will be distributed over.
The third (optional) parameter controls the starting position for distributing the beats.
One popular Euclidian rhythm (going by various names, such as "Pop Clave") is "(3,8,1)" or simply "(3,8)",
resulting in a rhythmical structure of "x ~ ~ x ~ ~ x ~" (3 beats over 8 segments, starting on position 1).
<MiniRepl tune={`"e5(2,8) b4(3,8) d5(2,8) c5(3,8)".slow(4)`} />
## Mini Notation TODO
Compared to [tidal mini notation](https://tidalcycles.org/docs/patternlib/tutorials/mini_notation/), the following mini notation features are missing from Strudel:
- [x] Euclidean algorithm "c3(3,2,1)" TODO: document
- [ ] Tie symbols "\_"
- [ ] feet marking "."
- [ ] random choice "|"
@ -436,12 +446,6 @@ Applies the given function by the given time offset:
<MiniRepl tune={`"c3 eb3 g3".off(1/8, add(7))`} />
### append(pat)
Appends the given pattern after the current pattern:
<MiniRepl tune={`"c4,eb4,g4".append("c4,f4,ab4")`} />
### stack(pat)
Stacks the given pattern to the current pattern:
@ -643,10 +647,10 @@ Turns chord symbols into root notes of chords in given octave.
<MiniRepl tune={`"<C^7 A7b13 Dm7 G7>".rootNotes(3)`} />
Together with edit, struct and voicings, this can be used to create a basic backing track:
Together with layer, struct and voicings, this can be used to create a basic backing track:
<MiniRepl
tune={`"<C^7 A7b13 Dm7 G7>".edit(
tune={`"<C^7 A7b13 Dm7 G7>".layer(
x => x.voicings(['d3','g4']).struct("~ x"),
x => x.rootNotes(2).tone(synth(osc('sawtooth4')).chain(out()))
)`}