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Felix Roos edf2fb9781 more slides + style
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import { Slides, Slide } from './Slides.jsx';
import { MaxiRepl } from './MaxiRepl';
import ImgTile from './ImgTile';
<Slides>
<Slide>
<h1 className="mb-0">Strudel</h1>
<h2 className="mt-0">Algorithmic Patterns for the Web</h2>
<div className="flex space-x-2 items-center">
<em>
"The Analytical Engine weaves algebraic patterns, just as the Jacquard loom weaves flowers and leaves."
<br />
“Supposing, for instance, that the fundamental relations of pitched sounds in the science of harmony and of musical
composition were susceptible of such expression and adaptations, the [Analytical] Engine might compose elaborate and
scientific pieces of music of any degree of complexity or extent." - Ada Lovelace
</em>
</div>
<img src="./ada.jpg" className="h-[400px] rounded-md" />
</Slide><Slide>
<img src="./codeandmusic.png" className="h-[700px] rounded-md" />
<div className="text-left">
- How to represent and control music with code?
- How to leverage unique features of computing?
- How to break loose from old conventions?
</div>
</Slide><Slide>
## About Me
<div className="text-left">
- 💻 Studied Computer Science and Media, working as a software developer by day
- 🎺 Trumpet Player, studied Jazz and Popular Music
- 🎤 Dilettante Music Producer of all kinds of genres
- 💿 ocassionally publishes music with Lui Mafuta & Puste
- 🔌 Modular Synth & Electronics Lover, Dilettante DJ ..
- 💌 Coding Blog: [Loophole Letters](https://loophole-letters.vercel.app/)
- 👀 Loves visualizations
<div className="grid grid-cols-5 gap-4 mt-12">
<ImgTile height={200} src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2Flambdoma.png&w=2048&q=75" />
{/* <ImgTile
height={300}
src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2Fharmonic-spiral.png&w=2048&q=75"
/> */}
<ImgTile height={200} src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2Fpiano-roll.png&w=2048&q=75" />
<ImgTile height={200} src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2Fcof.png&w=2048&q=75" />
<ImgTile height={200} src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2F251graph.png&w=2048&q=75" />
<ImgTile
height={200}
src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2Fdiy-modular-synth%2Fmidi2cv-styleshot.png&w=2048&q=75"
/>
{/* <ImgTile height={200} src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2Fcolorpiano.png&w=2048&q=75" /> */}
{/*
<ImgTile
height={300}
src="https://loophole-letters.vercel.app/_next/image?url=%2Fimg%2Fvoicing-permutation.png&w=2048&q=75"
/> */}
</div>
</div>
</Slide><Slide>
## What is Live Coding?
<i className="text-3xl">
"In live coding performance, performers create time-based works by programming them while these same works are being
executed." <br />
Roberts & Wakefield, 2016
</i>
<img src="./hydra-screenshot.png" className="h-[600px] rounded-md" />
<p>
Screenshot: "Olivia Jack -{' '}
<a href="https://hydra.ojack.xyz/" target="_blank">
Hydra
</a>
, Live Coding Visuals in the Browser".{' '}
</p>
</Slide><Slide>
## What is Tidal Cycles?
<div className="text-left">
- A very popular software for live coding music
- a powerful pattern language for time-based art
- find out more at <a href="https://tidalcycles.org" target="_blank" className="text-indigo-400">tidalcycles.org</a>
</div>
<img src="./tidal-screenshot2.png" className="h-[500px] rounded-md" />
<p>
Screenshot:{' '}
<a href="https://youtu.be/tY8BmTnlUA0?t=594" target="_blank">
"Yaxu & hellocatfood - LIVE code for Noise Quest"
</a>
</p>
</Slide><Slide>
## What is Strudel?
<div className="text-left">
- a port of Tidal Cycles to JavaScript
- a browser based editor for zero-install live coding: <a href="https://strudel.tidalcycles.org/" target="_blank" className="text-indigo-400">strudel.tidalcycles.org</a>
- many ways to make sound: Tone.js, Webdirt, OSC, MIDI ...
<div className="hidden">
- "Strudel" = internationally known as delicious pastry, but also "swirl" / "whirlpool" in german
- (a tidal can cause a whirlpool!)
</div>
</div>
<img src="./strudel-screenshot.png" className="h-[500px] rounded-md mb-0" />
<p>
Screenshot:{' '}
<a href="https://youtu.be/IcMSocdKwvw?t=330" target="_blank">
"Algorave 10th Birthday March 2022 - froos"
</a>
</p>
</Slide><Slide>
## A Taste of Strudel
<MaxiRepl
canvasHeight={600}
code={[
`// froos - xylophone on the floor
const t = x => x.scaleTranspose("<0 2 4 3>/4").transpose(-2)
const s = x => x.scale(
cat('C3 minor pentatonic','G3 minor pentatonic')
.slow(4))
const delay = new FeedbackDelay(1/8, .6).chain(vol(0.1), out());
const chorus = new Chorus(1,2.5,0.5).start();
stack(
// melody
"<<10 7> <8 3>>/4".struct("x*3").apply(s)
.scaleTranspose("<0 3 2> <1 4 3>")
.superimpose(scaleTranspose(2).early(1/8))
.apply(t).tone(polysynth().set({
...osc('triangle4'),
...adsr(0,.08,0)
})
.chain(vol(0.2).connect(delay),chorus,out()))
.mask("<~@3 x>/16".early(1/8)),
// pad
"[1,3]/4".scale('G3 minor pentatonic').apply(t)
.tone(polysynth().set({
...osc('square2'),
...adsr(0.1,.4,0.8)
}).chain(vol(0.2),chorus,out())).mask("<~ x>/32"),
// xylophone
"c3,g3,c4".struct("<x*2 x>").fast("<1 <2!3 [4 8]>>")
.apply(s)
.scaleTranspose("<0 <1 [2 [3 <4 5>]]>>").apply(t)
.tone(polysynth().set({
...osc('sawtooth4'),
...adsr(0,.1,0)
}).chain(vol(0.4).connect(delay),out()))
.mask("<x@3 ~>/16".early(1/8)),
// bass
"c2 [c2 ~]*2".scale('C hirajoshi').apply(t)
.tone(synth({
...osc('sawtooth6'),
...adsr(0,.03,.4,.1)
}).chain(vol(0.4),out())),
// kick
"<c1!3 [c1 ~]*2>*2".tone(membrane().chain(vol(0.8),out())),
// snare
"~ <c3!7 [c3 c3*2]>".tone(noise().chain(vol(0.8),out())),
// hihat
"c3*4".transpose("[-24 0]*2").tone(metal(adsr(0,.02))
.chain(vol(0.5).connect(delay),out()))
).slow(1)`,
//
`// froos - giant steps, chiptune version
stack(
// melody
seq(
"[F#5 D5] [B4 G4] Bb4 [B4 A4]",
"[D5 Bb4] [G4 Eb4] F#4 [G4 F4]",
"Bb4 [B4 A4] D5 [D#5 C#5]",
"F#5 [G5 F5] Bb5 [F#5 [F#5 ~@3]]",
),
// chords
seq(
"[B^7 D7] [G^7 Bb7] Eb^7 [Am7 D7]",
"[G^7 Bb7] [Eb^7 F#7] B^7 [Fm7 Bb7]",
"Eb^7 [Am7 D7] G^7 [C#m7 F#7]",
"B^7 [Fm7 Bb7] Eb^7 [C#m7 F#7]"
)
.struct("~ [x ~]".fast(4*8))
.voicings(['E3', 'G4']),
// bass
seq(
"[B2 D2] [G2 D2] [Eb2 Bb2] [A2 D2]",
"[G2 Bb2] [Eb2 F#2] [B2 F#2] [F2 Bb2]",
"[Eb2 Bb2] [A2 D2] [G2 D2] [C#2 F#2]",
"[B2 F#2] [F2 Bb2] [Eb2 Bb2] [C#2 F#2]"
)
.struct("x ~".fast(4*8))
).slow(25)`,
//
`// froos - piano tune #3829
"0 4 <5 7> 2"
.off(1/16,x=>x.add(5).color('salmon'))
.echo(4,.125,.7)
.scale(cat(
'C hirajoshi',
slowcat('F hirajoshi','E pentatonic')
))
.slow(4)
.tone((await piano()).toDestination())
.pianoroll({ cycles:16, fold:1, vertical:0 })`,
//
`// froos - if so what else
const mix = (key) => vol({
chords: .2,
lead: 0.8,
bass: .4,
snare: .95,
kick: .9,
hihat: .35,
}[key]||0);
const delay = new FeedbackDelay(1/6, .3).chain(vol(.7), out());
const delay2 = new FeedbackDelay(1/6, .2).chain(vol(.15), out());
const chorus = new Chorus(1,2.5,0.5).start();
// instruments
const instr = (instrument) => ({
organ: polysynth().set({...osc('sawtooth4'), ...adsr(.01,.2,0)}).chain(mix('chords').connect(delay),out()),
lead: polysynth().set({...osc('triangle4'),...adsr(0.01,.05,0)}).chain(mix('lead').connect(delay2), out()),
bass: polysynth().set({...osc('sawtooth8'),...adsr(.02,.05,.3,.2)}).chain(mix('bass'),lowpass(3000), out()),
pad: polysynth().set({...osc('square2'),...adsr(0.1,.4,0.8)}).chain(vol(0.15),chorus,out()),
hihat: metal(adsr(0, .02, 0)).chain(mix('hihat'), out()),
snare: noise(adsr(0, .15, 0.01)).chain(mix('snare'), lowpass(5000), out()),
kick: membrane().chain(mix('kick'), out())
}[instrument]);
// harmony
const t = transpose("<0 0 1 0>/8");
const sowhat = scaleTranspose("0,3,6,9,11");
// track
stack(
"[<0 4 [3 [2 1]]>]/4".struct("[x]*3").mask("[~ x ~]").scale('D5 dorian').off(1/6, scaleTranspose(-7)).off(1/3, scaleTranspose(-5)).apply(t).tone(instr('lead')).mask("<~ ~ x x>/8"),
"<<e3 [~@2 a3]> <[d3 ~] [c3 f3] g3>>".scale('D dorian').apply(sowhat).apply(t).tone(instr('organ')).mask("<x x x ~>/8"),
"<[d2 [d2 ~]*3]!3 <a1*2 c2*3 [a1 e2]>>".apply(t).tone(instr('bass')),
"c1*6".tone(instr('hihat')),
"~ c3".tone(instr('snare')),
"<[c1@5 c1] <c1 [[c1@2 c1] ~] [c1 ~ c1] [c1!2 ~ c1!3]>>".tone(instr('kick')),
"[2,4]/4".scale('D dorian').apply(t).tone(instr('pad')).mask("<x x x ~>/8")
).fast(6/8)`,
//
`// froos - strudel schneckno
samples({
clubkick: 'clubkick/2.wav',
sd: ['808sd/SD0010.WAV','808sd/SD0050.WAV'],
hh: 'hh/000_hh3closedhh.wav',
clak: 'clak/000_clak1.wav',
jvbass: ['jvbass/000_01.wav','jvbass/001_02.wav','jvbass/003_04.wav','jvbass/004_05.wav','jvbass/005_06.wav']
}, 'https://raw.githubusercontent.com/tidalcycles/Dirt-Samples/master/');
stack(
s("<clubkick*2>,[~ <sd!3 sd(3,4,2)>],hh(3,4,2)").n("<0 1 2>").speed(.8),
n("<0 1*2 4(3,8) 2>").speed(.6).off(1/8,x=>x.speed(1.2).degradeBy(.5)).s("jvbass")
).reset("<x@7 <x(5,8,3) x(3,8) x(3,4,1)>>").cutoff(perlin.slow(7).range(100,20000)).webdirt().slow(3/2)`,
`stack( // drum pattern by yaxu
"24*2 [~ 25]".chunk(4, x => x.sub("12").fast(2))
.tone(membrane().toDestination()),
"~ x ~ x".every(2, x => x.fast(2)).iter(4)
.tone(noise().toDestination()),
"c4*8".add(saw.mul(12).slow(1.5)).degrade(0.05)
.tone(metal().set(adsr(0,.06,0,0)).chain(vol(0.5),out()))
)`,
]}
/>
</Slide><Slide>
## How it started
![strudel port quote](https://loophole-letters.vercel.app/img/strudel-port.png)
<div className="text-left">
- Started by Alex McLean, based on a port of a port of a rewrite of Tidal
- I implemented the REPL
- Help from Tidal Community Members
- Started with Tone.js, then added Web MIDI, OSC and Web Audio API outputs
- Inspired by: Tidal Vortex, Gibber, Estuary, Hydra, WAGS and Feedforward.
</div>
</Slide><Slide>
## REPL = Read Eval Play Loop
<div className="text-left">
1. Read: User code is parsed, syntax sugar is dissolved
2. Eval: Transformed code is evaluated, creating a **Pattern**
3. Play: The **Pattern** is queried for events, which trigger sounds and effects
4. Loop: The new output is fed back into the ears of the human, informing the next move
</div>
</Slide><Slide>
## Mini Notation
<div className="text-left">
- Embedded Domain Specific Language
- PEG.js grammar based on krill by Marc Resibois
- \* \[\] ~ , / <\> ! @ \(\)
</div>
<MaxiRepl
code={[
'"c3".pianoroll({ fold:1 })',
`// mini notation also works with samples
s("bd,[~ sd],hh*4").webdirt()`,
`\`[[e5 [b4 c5] d5 [c5 b4]]
[a4 [a4 c5] e5 [d5 c5]]
[b4 [~ c5] d5 e5]
[c5 a4 a4 ~]
[[~ d5] [~ f5] a5 [g5 f5]]
[e5 [~ c5] e5 [d5 c5]]
[b4 [b4 c5] d5 e5]
[c5 a4 a4 ~]],
[[e2 e3]*4]
[[a2 a3]*4]
[[g#2 g#3]*2 [e2 e3]*2]
[a2 a3 a2 a3 a2 a3 b1 c2]
[[d2 d3]*4]
[[c2 c3]*4]
[[b1 b2]*2 [e2 e3]*2]
[[a1 a2]*4]\`.slow(16)
.pianoroll({ fold:1, cycles:16 })`,
`stack(
// melody
\`<
[e5 ~] [[d5@2 c5] [~@2 e5]] ~ [~ [c5@2 d5]] [e5 e5] [d5 c5] [e5 f5] [g5 a5]
[~ c5] [c5 d5] [e5 [c5@2 c5]] [~ c5] [f5 e5] [c5 d5] [~ g6] [g6 ~]
[e5 ~] [[d5@2 c5] [~@2 e5]] ~ [~ [c5@2 d5]] [e5 e5] [d5 c5] [a5 g5] [c6 [e5@2 d5]]
[~ c5] [c5 d5] [e5 [c5@2 c5]] [~ c5] [f5 e5] [c5 d5] [~ [g6@2 ~] ~@2] [g5 ~]
[~ a5] [b5 c6] [b5@2 ~@2 g5] ~
[f5 ~] [[g5@2 f5] ~] [[e5 ~] [f5 ~]] [[f#5 ~] [g5 ~]]
[~ a5] [b5 c6] [b5@2 ~@2 g5] ~
[eb6 d6] [~ c6] ~!2
>\`
.legato(.95),
// sub melody
\`<
[~ g4]!2 [~ ab4]!2 [~ a4]!2 [~ bb4]!2
[~ a4]!2 [~ g4]!2 [d4 e4] [f4 gb4] ~!2
[~ g4]!2 [~ ab4]!2 [~ a4]!2 [~ bb4]!2
[~ a4]!2 [~ g4]!2 [d4 e4] [f4 gb4] ~!2
[~ c5]!4 [~ a4]!2 [[c4 ~] [d4 ~]] [[eb4 ~] [e4 ~]]
[~ c5]!4 [~ eb5]!2 [g4*2 [f4 ~]] [[e4 ~] [d4 ~]]
>\`,
// bass
\`<
c3!7 a3 f3!2
e3!2 ~!4
c3!7 a3 f3!2
e3!2 ~!4
f3!2 e3!2 d3!2 ~!2
f3!2 e3!2 ab3!2 ~!2
>\`
.legato(.5)
).fast(2).pianoroll({fold:1,cycles:8,overscan:8})`,
]}
/>
</Slide><Slide>
## Phasing
Oscillator Detune in slow motion
<MaxiRepl
code={[
`// Steve Reich - Piano Phase
"E4 F#4 B4 C#5 D5 F#4 E4 C#5 B4 F#4 D5 C#5".color('#00ff0050')
.superimpose(x=>x.fast(1.01).color('#ff00ff50'))
.slow(2)
.tone((await piano()).toDestination())
.pianoroll({fold:1,vertical:0,cycles:8})`,
`// Steve Reich - Clapping Music
s("hh").struct("x!3 ~ x!2 ~ x ~ x!2 ~").speed(.8)
.jux(x=>x.speed(1.2)
.late("<0 1 2 3 4 5 6 7 8 9 10 11>/8".div(12))
).slow(2).webdirt().pianoroll()`,
]}
/>
</Slide><Slide>
## Continuous Signals
<MaxiRepl
code={[
`sine.range(50,62).segment(32).slow(4)
.pianoroll({minMidi:48,maxMidi:62})`,
`sine.range(42,50).color('#00ff0050')
.superimpose(x=>x.fast(3/2).color('#ff00ff50'))
.fast(1)
.segment(64)
.pianoroll({fold:0,vertical:0,cycles:2})
// strudel disable-highlighting`,
]}
/>
<MaxiRepl
code={`s("hh*8").speed(sine.range(.5,2).slow(4))
.webdirt()`}
/>
</Slide>
</Slides>
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