Ok, I made this kind of tribal loop
# Copyleft - Jérôme Prudent
# https://in-thread.sonic-pi.net/t/sonic-pi-monthly-challenge-1/4442
# Sonic Pi monthly challenge : "Make any piece of sound from a single sample"
# The sample for this piece is downloadable at https://freesound.org/people/Kyster/sounds/140615/
sample_path = "/home/jerome/p/songs/Library/Sound FX & Scratches/bottle-cork-in-and-out-2012-1-4.wav"
sample_d = sample_duration(sample_path)
puts "sample duration #{sample_d}"
define :sample_slicer do |start_end|
start_end.collect { |x| (sample_d - x) / sample_d }
end
percu = sample_slicer([3.49, 3.23])
puts "percu : #{percu}"
t1 = 1.0
t2 = t1 / 2
t4 = t2/ 2
t8 = t4/ 2
b = bass = 0.5
m = medium = 0.75
h = high = 1
r = repos = 0
rs = [
#0
(ring b, b, m, m, b, b, h, h, b, b, m, m, b, b, h, h),
(ring b, r, m, m, r, r, h, r),
(ring b, r, m, m, r, b, h, r, b, r, r, m, b, b, m, r),
(ring b, m, m, r, b, r, h, h, b, h, r, h, b, r, h, h),
#4
(ring h, r, r, h, h, r, m, m),
(ring b, r, r, b, b, r, m, m),
(ring h, r, r, h, h, r, b, r, h, r, m, m, h, r, b, r),
(ring b, b, m, m, b, b, h, h, b, b, m, m, b, b, h, h),
#8
(ring b, r, m, m, b, h, h, r, b, r, m, m, b, h, h, r),
(ring m, m, r, h, m, m, h, r, m, m, h, r, m, m, h, r),
]
set :timbre, rs.first
set :rythm, (ring t8)
set :chord, (chord knit(0, 20, 3, 1).choose, knit(:m7, 3, :dim7, 2, :dom7, 1).tick(:x))
live_loop :ticks do |cpt|
use_bpm 100
sleep t8+0.001
set :guiro, false
if (factor?(cpt, 10 * 16))
x = rs.tick(:rs)
puts "Change rythm #{x}"
set :timbre, x
set :rythm, (ring t8)
end
if (factor?(cpt, 16))
ch = (chord knit(0, 9, 3, 1).choose, knit(:m7, 3, :dim7, 2, :dom7, 1).tick(:x))
puts "Change chord #{x}"
set :chord, ch
end
if (factor?(cpt, [4,8].choose*16 + 8))
set :guiro, true
end
cpt += 1
end
#you can change the pattern easily
with_fx :lpf do
with_fx :distortion do
live_loop :percu do
sync :ticks
timbre = get :timbre
t = timbre.tick(:timbre)
cutoff = 90
if (factor?(look(:timbre), 4))
puts look(:timbre)
cutoff = 120
end
p = false
if (t != repos)
p = sample sample_path, amp: 1, start: percu[0], finish: percu[1],
rate: t, cutoff: cutoff
end
rythm = get :rythm
r = rythm.tick(:rythm)
sleep r
end
end
end
live_loop :fast_tictictic do
sync :ticks
speed = knit(0, 2, 1, 2, 2, 1).choose
probability = (knit true, 2, false, 1)
with_fx :hpf do
t = (sync :current_rythm) - 0.001
speed.times do
sample sample_path, amp: 1, start: percu[0], finish: percu[1], rate: 8
sleep t / speed
end
end
end
with_fx :reverb do
live_loop :melody do
sync :ticks
if ((ring true, true, false, false).tick(:p))
ch = get :chord
a, b, c = ch
if(one_in(3))
puts "reverse"
ch = ch.reverse
end
n = t8 / (ring 2, 1, 1, 1, 1, 1, 1, 1, 1).tick(:n)
sample sample_path, amp: 1, start: percu[0], finish: percu[1], rate: 2, rpitch: a
sleep n
sample sample_path, amp: 1, start: percu[0], finish: percu[1], rate: 2, rpitch: b
sleep n
sample sample_path, amp: 1, start: percu[0], finish: percu[1], rate: 2, rpitch: c
sleep n
end
end
end
guiro1 = sample_slicer([3.783, 3.497])
puts "guiro1 : #{guiro1}"
guiro2 = sample_slicer([sample_d, 4.016])
puts "guiro2 : #{guiro2}"
scratch = sample_slicer([0.834, 0.3])
puts "scratch : #{scratch}"
live_loop :guiro2 do
s, e = [guiro1, guiro2, scratch].tick(:g)
if(sync :guiro)
with_fx :ping_pong do
with_fx :hpf do
s = sample sample_path, amp: 1, start: s, finish: e, rate: 0.5
end
end
end
end
I will try again .