Algorithmic pattern ideas

This is a straight copy of the main https://strudel.cc website, but with this extra worksheet for you.

Repetition

We love repetition

note("c3 eb3 g3 as3").sound("sawtooth")
.lpf("<4000 2000 1000 500 200 100>")

We love disrupting repetition

note("c3 eb3 g3 as3").sound("sawtooth")
  .lpf("2000")
  .every(4, fast(2))

We love disrupting repetition at random

note("c3 eb3 g3 as3").sound("sawtooth")
  .lpf("2000")
  .every(4, fast(2)).rarely(hurry(2))

We love repeating sounds

s("bd sd [~ bd] [sd mt]")
  .bank("RolandTR909")
  .lastOf(3, ply(2))
  .slow(1.5)
 
await samples('github:yaxu/clean-breaks/main')
s("think")
  .splice(8, "[0 1 2 3 4 5 6 7]/2".every(3, ply(2)))

Symmetry

Mirroring

note( "c3 eb3 g3 <as3 c4>").sound("triangle")
  .palindrome()
  .hpf("<4000 2000 1000 500 200 100>")
 
"c3 eb3 g3 <as3 c4>".note()
  .sometimes(rev())
  .hpf("<4000 2000 1000 500 200 100>")

Rotation is also a form of symmetry

This rotates the pattern by a quarter, each cycle:

await samples('github:yaxu/clean-breaks/main')
s("think")
  .splice(16, "0 1 2 3 4 5 6 7"
          .iter(4)
         )

Interference

Polymeter

s("{bd [bd sd] [bd lt] ~, cb ~ ~}%4")
  .bank("ViscoSpaceDrum")
  .room(0.4)

Backwards and forwards, while rotating..


s("bd [bd sd] [bd lt] cb").bank("ViscoSpaceDrum")
  .iter(4)
  .jux(x => x.speed(2).rev())

Offset

Rotated transformations

 "c3 eb3 g3 <as3 c4>".off(1/8, x=>x.add(12)).note()
   .sound("sawtooth")
  .cutoff(sine.range(500,2000).slow(4))
 
note("<c3(3,8) c4(3,16) d3(5,16) e4(5,16,2)>")
  .off("0.125", add(note(12)))
  .off("0.25", add(note("<-7 5 12>")))
  .slow(2)
  .jux(rev)
  .s("gm_voice_oohs")
  .clip(1).room(1).sz(1)

Layer

note("~ [~ gs5] [gs5 g5] [g5 f5] f5 f5 g5 [g5 g5] [~ gs5] [~ gs5] [gs5 g5] [g5 f5] f5 [gs5 as5] [~ gs5] [g5 [gs5 gs5]]")
  .slow(4)
  .sound("piano").cutoff(sine.range(500,2000).slow(4))
 
"~ [~ gs5] [gs5 g5] [g5 f5] f5 f5 g5 [g5 g5] [~ gs5] [~ gs5] [gs5 g5] [g5 f5] f5 [gs5 as5] [~ gs5] [g5 [gs5 gs5]]"
.layer(x=>x.add("0,12,7,-12,-24")).note().slow(4)
.sound("piano")