Petal

About

Petal is a small language on Sonic Pi with similar syntax to TidalCycles.

The primal motivation of this project is creating a language suitable for our telecoding live performance of space-moere at SIAF2017.

Requirements

Sonic Pi v2.10 or later (v2.10, v2.11.1, v3.0.1, v3.1.0, v3.3.1)

Installation

Download zip file from Release Page and extract it.

Usage

Open an empty Sonic Pi buffer, type in the following code and hit Run.

require "~/petal/petal.rb"   # the path you extract the file
d1 'bd'

Tutorial

Petal: the guide

Examples

My demo

https://twitter.com/kn1kn1/status/881498461635461121

require "~/petal/petal.rb"
cps 0.55

d1 ":bd_klub(11,16)", amp: 3
d2 ":bd_haus(6,16)", amp: 4
d3 "hh(13,16)", n: 0, amp: 4, rate: 'rand -1 1', pan: 'rand -1 1'
d4 "if(5,16)", n: 'irand 64', amp: 3
d5 "if(11,16,2)", n: 'irand 64',
  rate: 'rand -1 1', pan: 'rand -0.2 0.2', amp: 3

Code by Sanju (@papa_oom_mowmow, @jsanjuan83)

https://twitter.com/papa_oom_mowmow/status/903943411052552193

require "~/petal/petal.rb"
cps 2.5/6

use_bpm get_bpm * 2
live_loop :paul do
  d1 "hh*2 808:2(3,4) ~ ~"
  with_fx :echo, phase: [2.5, 1.0, 0.5].ring.tick / 6, mix: 1 do
    with_fx :krush, cutoff: 90 do
      d2 "[bd d d ~] cp:3"
    end
  end
  sleep 16
end

live_loop :ringo do
  sleep 4
end

live_loop :john, sync: :ringo do
  use_random_seed 1000
  32.times do
    with_fx :lpf, cutoff: 60 do
      with_fx :slicer, amp_min: 0.4, wave: 2 do
        synth :saw, note: (chord :d3, :augmented, num_octaves: 3).choose, release: 4.5 unless one_in 3
        sleep 0.25
      end
    end
  end
end

live_loop :chris, sync: :ringo do
  sleep [0, 4].choose
  with_fx :echo, decay: [8,12].choose, phase: [0.25,0.5].choose do
    sample :drum_splash_hard, rate: -1, amp: 0.3, lpf: 110
  end
  sleep 8
end

My livecoding performance at Algorave Tokyo 2018 August

https://twitter.com/h3xl3r/status/1031194838874509312

# Algorave Tokyo 2018-08-19
#  Kenichi Kanai @kn1kn1
require "~/petal/petal.rb"; cps 1; d9; use_bpm get_bpm

live_loop :l5, sync: :d0 do
  with_fx :pitch_shift, pitch: 12, window_size: [0.001, 0.005, 0.01].choose do
    with_fx :distortion do
      d1 "tech(11,16)", slow: 2, rate: 1, amp: 1, n: "irand 64"
      d2 "sf(7,16,1)", slow: 2, rate: 1, amp: 0.5, n: "irand 64", pan: "rand -0.5 0.5"
      d4 "peri(3,16,1)", slow: 2, rate: 1, amp: 0.5, n: "irand 64", pan: "rand -0.5 0.5"
      d5 "perc(3,16,2)", slow: 2, rate: 1, amp: 0.5, n: "irand 64", pan: "rand -0.5 0.5"
      d6 "ifdrums(9,16,2)", slow: 2, rate: 1, amp: 0.75, n: "irand 64", pan: "rand -0.5 0.5"
      d7 "jazz(3,16,1)", slow: 2, rate: 1, amp: 0.5, n: "irand 64", pan: "rand -0.5 0.5"
      d8 "ul(3,16,3)", slow: 2, rate: 1, amp: 0.5, n: "irand 64", pan: "rand -0.5 0.5"
      d3 :bd_haus, slow: 4
    end
    sleep 7
  end
end

See https://github.com/kn1kn1/algorave.tokyo_2018-aug-19 for more code.

Some code from our live performance of space-moere.

space-moere #0 - Balloon

require "~/petal/petal.rb"
d1"outdoor:2/2",rate:"rand -1 -0.125"

space-moere #1 - Landing

require "~/petal/petal.rb"
cps 0.55
d1":bd_haus*4"
d2"sid(11,16,2)",n:'irand 1 11'

space-moere #2 - Clouds

require "~/petal/petal.rb"
cps 0.55
d1":bd_klub(12,32) :bd_klub(12,32)",rate:"1.5 1",slow:8
d2"ul(11,16,3)",n:'irand 9'

space-moere #3 - Outer

require "~/petal/petal.rb"
cps 0.55
d1"d(7,8,1)",n:'irand 3'