Sonic Pi Breaks

breaks.rb

# mashing up breakbeats in Sonic Pi
# resulting audio: https://soundcloud.com/kindohm/sonic-pi-breaks

# this var changes the playback speed of the breaks,
# which in turn controls the loop sleep time and overall tempo
rate = 1

# samples paths
samples = []
samples.push("C:\\tidal-samples\\samples\\akuma\\Half Baked break a.wav")
samples.push("C:\\tidal-samples\\samples\\akuma\\Half Baked break b.wav")
samples.push("C:\\tidal-samples\\samples\\akuma\\Half Baked break c.wav")
samples.push("C:\\tidal-samples\\samples\\akuma\\Half Baked break d.wav")
samples.push("C:\\tidal-samples\\samples\\akuma\\Half Baked break e.wav")
samples.push("C:\\tidal-samples\\samples\\akuma\\Half Baked break f.wav")

# load up first sample
# this code should probably be in a class/function or something
slices = 16
samp = samples[0]
orig_dur = sample_duration samp
new_sample_duration = (1 / rate) * orig_dur
slice_dur = new_sample_duration/slices

sample_idx = 0
idx = 0

single_slice_size = 1/slices.to_f
start_times = []

for i in 1..slices-1
  time = i.to_f/slices.to_f
  start_times.push(time)
end

live_loop :breaks do

  with_fx :compressor do |c|
    with_fx :distortion do |d|

      control c, pre_amp: 1.7
      control d, distort: 0.5

      # this code should prob go down where the sample is changed,
      # but I'm too lazy right now to move it
      orig_dur = sample_duration samp
      new_sample_duration = (1 / rate) * orig_dur
      slice_dur = new_sample_duration/slices

      start = choose(start_times)
      finish = start + single_slice_size
      final_rate = rate

      if one_in(10)
        final_rate = final_rate * -1
      end

      sample samp, start: start, finish: finish, rate: final_rate

      sleep slice_dur

      idx += 1
      if idx == 8
        sample_idx += 1
        if sample_idx > samples.length - 1
          sample_idx = 0
        end

        # at this point enough time has passed so we're going to load a new samples
        # and re-calculate slice duration based on the sample's length, etc.
        samp = samples[sample_idx]
        orig_dur = sample_duration samp
        new_sample_duration = (1 / rate) * orig_dur
        slice_dur = new_sample_duration/slices
        idx = 0
      end
    end
  end
end