Sonic Pi source for https://soundcloud.com/threedaymonk/out-of-chaos-disquiet0568

0568.rb

use_bpm 80

$t0 = Time.now

def elapsed
  Time.now - $t0
end

def converge(period)
  t = elapsed
  t < period ? (period - t) / period : 0
end

def diverge(period)
  1.0 - converge(period)
end

slumber = %i[ c e g a d ]

loop do
  use_synth :prophet
  
  with_fx :gverb, mix: 0.4 do
    play slumber.pick,
      pitch: rrand_i(-1, 1) * 12 + rand(3 * converge(60)),
      cutoff: 70 + 40 * converge(120),
      res: 0.3,
      amp: 0.2,
      pan: rrand(-1, 1),
      sustain_level: 0.7,
      attack: 3,
      decay: 3,
      release: 4,
      duration: 8 + 8 * diverge(180)
  end
  sleep 1 + rand(7 * diverge(180))
  break if elapsed > 180
end