Trying all 8 beat long snare drum patterns

Creations & Ideas
1

Here snare drum is allowed to take all possible permutations of 8 beats.

use_bpm 120

SN_all = [[0, 0, 0, 0, 0, 0, 0, 0],
          [0, 0, 0, 0, 0, 0, 0, 1],
          [0, 0, 0, 0, 0, 0, 1, 0],
          [0, 0, 0, 0, 0, 0, 1, 1],
          [0, 0, 0, 0, 0, 1, 0, 0],
          [0, 0, 0, 0, 0, 1, 0, 1],
          [0, 0, 0, 0, 0, 1, 1, 0],
          [0, 0, 0, 0, 0, 1, 1, 1],
          [0, 0, 0, 0, 1, 0, 0, 0],
          [0, 0, 0, 0, 1, 0, 0, 1],
          [0, 0, 0, 0, 1, 0, 1, 0],
          [0, 0, 0, 0, 1, 0, 1, 1],
          [0, 0, 0, 0, 1, 1, 0, 0],
          [0, 0, 0, 0, 1, 1, 0, 1],
          [0, 0, 0, 0, 1, 1, 1, 0],
          [0, 0, 0, 0, 1, 1, 1, 1],
          [0, 0, 0, 1, 0, 0, 0, 0],
          [0, 0, 0, 1, 0, 0, 0, 1],
          [0, 0, 0, 1, 0, 0, 1, 0],
          [0, 0, 0, 1, 0, 0, 1, 1],
          [0, 0, 0, 1, 0, 1, 0, 0],
          [0, 0, 0, 1, 0, 1, 0, 1],
          [0, 0, 0, 1, 0, 1, 1, 0],
          [0, 0, 0, 1, 0, 1, 1, 1],
          [0, 0, 0, 1, 1, 0, 0, 0],
          [0, 0, 0, 1, 1, 0, 0, 1],
          [0, 0, 0, 1, 1, 0, 1, 0],
          [0, 0, 0, 1, 1, 0, 1, 1],
          [0, 0, 0, 1, 1, 1, 0, 0],
          [0, 0, 0, 1, 1, 1, 0, 1],
          [0, 0, 0, 1, 1, 1, 1, 0],
          [0, 0, 0, 1, 1, 1, 1, 1],
          [0, 0, 1, 0, 0, 0, 0, 0],
          [0, 0, 1, 0, 0, 0, 0, 1],
          [0, 0, 1, 0, 0, 0, 1, 0],
          [0, 0, 1, 0, 0, 0, 1, 1],
          [0, 0, 1, 0, 0, 1, 0, 0],
          [0, 0, 1, 0, 0, 1, 0, 1],
          [0, 0, 1, 0, 0, 1, 1, 0],
          [0, 0, 1, 0, 0, 1, 1, 1],
          [0, 0, 1, 0, 1, 0, 0, 0],
          [0, 0, 1, 0, 1, 0, 0, 1],
          [0, 0, 1, 0, 1, 0, 1, 0],
          [0, 0, 1, 0, 1, 0, 1, 1],
          [0, 0, 1, 0, 1, 1, 0, 0],
          [0, 0, 1, 0, 1, 1, 0, 1],
          [0, 0, 1, 0, 1, 1, 1, 0],
          [0, 0, 1, 0, 1, 1, 1, 1],
          [0, 0, 1, 1, 0, 0, 0, 0],
          [0, 0, 1, 1, 0, 0, 0, 1],
          [0, 0, 1, 1, 0, 0, 1, 0],
          [0, 0, 1, 1, 0, 0, 1, 1],
          [0, 0, 1, 1, 0, 1, 0, 0],
          [0, 0, 1, 1, 0, 1, 0, 1],
          [0, 0, 1, 1, 0, 1, 1, 0],
          [0, 0, 1, 1, 0, 1, 1, 1],
          [0, 0, 1, 1, 1, 0, 0, 0],
          [0, 0, 1, 1, 1, 0, 0, 1],
          [0, 0, 1, 1, 1, 0, 1, 0],
          [0, 0, 1, 1, 1, 0, 1, 1],
          [0, 0, 1, 1, 1, 1, 0, 0],
          [0, 0, 1, 1, 1, 1, 0, 1],
          [0, 0, 1, 1, 1, 1, 1, 0],
          [0, 0, 1, 1, 1, 1, 1, 1],
          [0, 1, 0, 0, 0, 0, 0, 0],
          [0, 1, 0, 0, 0, 0, 0, 1],
          [0, 1, 0, 0, 0, 0, 1, 0],
          [0, 1, 0, 0, 0, 0, 1, 1],
          [0, 1, 0, 0, 0, 1, 0, 0],
          [0, 1, 0, 0, 0, 1, 0, 1],
          [0, 1, 0, 0, 0, 1, 1, 0],
          [0, 1, 0, 0, 0, 1, 1, 1],
          [0, 1, 0, 0, 1, 0, 0, 0],
          [0, 1, 0, 0, 1, 0, 0, 1],
          [0, 1, 0, 0, 1, 0, 1, 0],
          [0, 1, 0, 0, 1, 0, 1, 1],
          [0, 1, 0, 0, 1, 1, 0, 0],
          [0, 1, 0, 0, 1, 1, 0, 1],
          [0, 1, 0, 0, 1, 1, 1, 0],
          [0, 1, 0, 0, 1, 1, 1, 1],
          [0, 1, 0, 1, 0, 0, 0, 0],
          [0, 1, 0, 1, 0, 0, 0, 1],
          [0, 1, 0, 1, 0, 0, 1, 0],
          [0, 1, 0, 1, 0, 0, 1, 1],
          [0, 1, 0, 1, 0, 1, 0, 0],
          [0, 1, 0, 1, 0, 1, 0, 1],
          [0, 1, 0, 1, 0, 1, 1, 0],
          [0, 1, 0, 1, 0, 1, 1, 1],
          [0, 1, 0, 1, 1, 0, 0, 0],
          [0, 1, 0, 1, 1, 0, 0, 1],
          [0, 1, 0, 1, 1, 0, 1, 0],
          [0, 1, 0, 1, 1, 0, 1, 1],
          [0, 1, 0, 1, 1, 1, 0, 0],
          [0, 1, 0, 1, 1, 1, 0, 1],
          [0, 1, 0, 1, 1, 1, 1, 0],
          [0, 1, 0, 1, 1, 1, 1, 1],
          [0, 1, 1, 0, 0, 0, 0, 0],
          [0, 1, 1, 0, 0, 0, 0, 1],
          [0, 1, 1, 0, 0, 0, 1, 0],
          [0, 1, 1, 0, 0, 0, 1, 1],
          [0, 1, 1, 0, 0, 1, 0, 0],
          [0, 1, 1, 0, 0, 1, 0, 1],
          [0, 1, 1, 0, 0, 1, 1, 0],
          [0, 1, 1, 0, 0, 1, 1, 1],
          [0, 1, 1, 0, 1, 0, 0, 0],
          [0, 1, 1, 0, 1, 0, 0, 1],
          [0, 1, 1, 0, 1, 0, 1, 0],
          [0, 1, 1, 0, 1, 0, 1, 1],
          [0, 1, 1, 0, 1, 1, 0, 0],
          [0, 1, 1, 0, 1, 1, 0, 1],
          [0, 1, 1, 0, 1, 1, 1, 0],
          [0, 1, 1, 0, 1, 1, 1, 1],
          [0, 1, 1, 1, 0, 0, 0, 0],
          [0, 1, 1, 1, 0, 0, 0, 1],
          [0, 1, 1, 1, 0, 0, 1, 0],
          [0, 1, 1, 1, 0, 0, 1, 1],
          [0, 1, 1, 1, 0, 1, 0, 0],
          [0, 1, 1, 1, 0, 1, 0, 1],
          [0, 1, 1, 1, 0, 1, 1, 0],
          [0, 1, 1, 1, 0, 1, 1, 1],
          [0, 1, 1, 1, 1, 0, 0, 0],
          [0, 1, 1, 1, 1, 0, 0, 1],
          [0, 1, 1, 1, 1, 0, 1, 0],
          [0, 1, 1, 1, 1, 0, 1, 1],
          [0, 1, 1, 1, 1, 1, 0, 0],
          [0, 1, 1, 1, 1, 1, 0, 1],
          [0, 1, 1, 1, 1, 1, 1, 0],
          [0, 1, 1, 1, 1, 1, 1, 1],
          [1, 0, 0, 0, 0, 0, 0, 0],
          [1, 0, 0, 0, 0, 0, 0, 1],
          [1, 0, 0, 0, 0, 0, 1, 0],
          [1, 0, 0, 0, 0, 0, 1, 1],
          [1, 0, 0, 0, 0, 1, 0, 0],
          [1, 0, 0, 0, 0, 1, 0, 1],
          [1, 0, 0, 0, 0, 1, 1, 0],
          [1, 0, 0, 0, 0, 1, 1, 1],
          [1, 0, 0, 0, 1, 0, 0, 0],
          [1, 0, 0, 0, 1, 0, 0, 1],
          [1, 0, 0, 0, 1, 0, 1, 0],
          [1, 0, 0, 0, 1, 0, 1, 1],
          [1, 0, 0, 0, 1, 1, 0, 0],
          [1, 0, 0, 0, 1, 1, 0, 1],
          [1, 0, 0, 0, 1, 1, 1, 0],
          [1, 0, 0, 0, 1, 1, 1, 1],
          [1, 0, 0, 1, 0, 0, 0, 0],
          [1, 0, 0, 1, 0, 0, 0, 1],
          [1, 0, 0, 1, 0, 0, 1, 0],
          [1, 0, 0, 1, 0, 0, 1, 1],
          [1, 0, 0, 1, 0, 1, 0, 0],
          [1, 0, 0, 1, 0, 1, 0, 1],
          [1, 0, 0, 1, 0, 1, 1, 0],
          [1, 0, 0, 1, 0, 1, 1, 1],
          [1, 0, 0, 1, 1, 0, 0, 0],
          [1, 0, 0, 1, 1, 0, 0, 1],
          [1, 0, 0, 1, 1, 0, 1, 0],
          [1, 0, 0, 1, 1, 0, 1, 1],
          [1, 0, 0, 1, 1, 1, 0, 0],
          [1, 0, 0, 1, 1, 1, 0, 1],
          [1, 0, 0, 1, 1, 1, 1, 0],
          [1, 0, 0, 1, 1, 1, 1, 1],
          [1, 0, 1, 0, 0, 0, 0, 0],
          [1, 0, 1, 0, 0, 0, 0, 1],
          [1, 0, 1, 0, 0, 0, 1, 0],
          [1, 0, 1, 0, 0, 0, 1, 1],
          [1, 0, 1, 0, 0, 1, 0, 0],
          [1, 0, 1, 0, 0, 1, 0, 1],
          [1, 0, 1, 0, 0, 1, 1, 0],
          [1, 0, 1, 0, 0, 1, 1, 1],
          [1, 0, 1, 0, 1, 0, 0, 0],
          [1, 0, 1, 0, 1, 0, 0, 1],
          [1, 0, 1, 0, 1, 0, 1, 0],
          [1, 0, 1, 0, 1, 0, 1, 1],
          [1, 0, 1, 0, 1, 1, 0, 0],
          [1, 0, 1, 0, 1, 1, 0, 1],
          [1, 0, 1, 0, 1, 1, 1, 0],
          [1, 0, 1, 0, 1, 1, 1, 1],
          [1, 0, 1, 1, 0, 0, 0, 0],
          [1, 0, 1, 1, 0, 0, 0, 1],
          [1, 0, 1, 1, 0, 0, 1, 0],
          [1, 0, 1, 1, 0, 0, 1, 1],
          [1, 0, 1, 1, 0, 1, 0, 0],
          [1, 0, 1, 1, 0, 1, 0, 1],
          [1, 0, 1, 1, 0, 1, 1, 0],
          [1, 0, 1, 1, 0, 1, 1, 1],
          [1, 0, 1, 1, 1, 0, 0, 0],
          [1, 0, 1, 1, 1, 0, 0, 1],
          [1, 0, 1, 1, 1, 0, 1, 0],
          [1, 0, 1, 1, 1, 0, 1, 1],
          [1, 0, 1, 1, 1, 1, 0, 0],
          [1, 0, 1, 1, 1, 1, 0, 1],
          [1, 0, 1, 1, 1, 1, 1, 0],
          [1, 0, 1, 1, 1, 1, 1, 1],
          [1, 1, 0, 0, 0, 0, 0, 0],
          [1, 1, 0, 0, 0, 0, 0, 1],
          [1, 1, 0, 0, 0, 0, 1, 0],
          [1, 1, 0, 0, 0, 0, 1, 1],
          [1, 1, 0, 0, 0, 1, 0, 0],
          [1, 1, 0, 0, 0, 1, 0, 1],
          [1, 1, 0, 0, 0, 1, 1, 0],
          [1, 1, 0, 0, 0, 1, 1, 1],
          [1, 1, 0, 0, 1, 0, 0, 0],
          [1, 1, 0, 0, 1, 0, 0, 1],
          [1, 1, 0, 0, 1, 0, 1, 0],
          [1, 1, 0, 0, 1, 0, 1, 1],
          [1, 1, 0, 0, 1, 1, 0, 0],
          [1, 1, 0, 0, 1, 1, 0, 1],
          [1, 1, 0, 0, 1, 1, 1, 0],
          [1, 1, 0, 0, 1, 1, 1, 1],
          [1, 1, 0, 1, 0, 0, 0, 0],
          [1, 1, 0, 1, 0, 0, 0, 1],
          [1, 1, 0, 1, 0, 0, 1, 0],
          [1, 1, 0, 1, 0, 0, 1, 1],
          [1, 1, 0, 1, 0, 1, 0, 0],
          [1, 1, 0, 1, 0, 1, 0, 1],
          [1, 1, 0, 1, 0, 1, 1, 0],
          [1, 1, 0, 1, 0, 1, 1, 1],
          [1, 1, 0, 1, 1, 0, 0, 0],
          [1, 1, 0, 1, 1, 0, 0, 1],
          [1, 1, 0, 1, 1, 0, 1, 0],
          [1, 1, 0, 1, 1, 0, 1, 1],
          [1, 1, 0, 1, 1, 1, 0, 0],
          [1, 1, 0, 1, 1, 1, 0, 1],
          [1, 1, 0, 1, 1, 1, 1, 0],
          [1, 1, 0, 1, 1, 1, 1, 1],
          [1, 1, 1, 0, 0, 0, 0, 0],
          [1, 1, 1, 0, 0, 0, 0, 1],
          [1, 1, 1, 0, 0, 0, 1, 0],
          [1, 1, 1, 0, 0, 0, 1, 1],
          [1, 1, 1, 0, 0, 1, 0, 0],
          [1, 1, 1, 0, 0, 1, 0, 1],
          [1, 1, 1, 0, 0, 1, 1, 0],
          [1, 1, 1, 0, 0, 1, 1, 1],
          [1, 1, 1, 0, 1, 0, 0, 0],
          [1, 1, 1, 0, 1, 0, 0, 1],
          [1, 1, 1, 0, 1, 0, 1, 0],
          [1, 1, 1, 0, 1, 0, 1, 1],
          [1, 1, 1, 0, 1, 1, 0, 0],
          [1, 1, 1, 0, 1, 1, 0, 1],
          [1, 1, 1, 0, 1, 1, 1, 0],
          [1, 1, 1, 0, 1, 1, 1, 1],
          [1, 1, 1, 1, 0, 0, 0, 0],
          [1, 1, 1, 1, 0, 0, 0, 1],
          [1, 1, 1, 1, 0, 0, 1, 0],
          [1, 1, 1, 1, 0, 0, 1, 1],
          [1, 1, 1, 1, 0, 1, 0, 0],
          [1, 1, 1, 1, 0, 1, 0, 1],
          [1, 1, 1, 1, 0, 1, 1, 0],
          [1, 1, 1, 1, 0, 1, 1, 1],
          [1, 1, 1, 1, 1, 0, 0, 0],
          [1, 1, 1, 1, 1, 0, 0, 1],
          [1, 1, 1, 1, 1, 0, 1, 0],
          [1, 1, 1, 1, 1, 0, 1, 1],
          [1, 1, 1, 1, 1, 1, 0, 0],
          [1, 1, 1, 1, 1, 1, 0, 1],
          [1, 1, 1, 1, 1, 1, 1, 0],
          [1, 1, 1, 1, 1, 1, 1, 1]]

BD = [1, 0, 1, 0, 1, 0, 1, 0]

#(255.downto(2)).each do |i|
32.times do
  tick
  sample :drum_snare_soft,amp:1 if SN_all[67].look == 1
  sample :drum_bass_soft,amp:1 if BD.look == 1
  sample :drum_cymbal_open,amp:0.2
  sleep 0.5
end
#end

All 8 beat patterns are generated by python code:

>>> r = itertools.product([0,1],repeat = 8)
>>> for s in r:
	print(list(s))
2 Likes
2

Python is not required.

a=[]
(0..255).each do |i|
  a[i]=("0"*(8-i.to_s(2).length)+i.to_s(2)).to_s.chars.map(&:to_i)
end
puts a
2 Likes
3

This is for ruby experts. In python its simple and straightforward for me.

4

Or… for Sonic Pi people to learn from.

Been experimenting with similar things in Puredata, recently. More specifically, I convert such binary sequences to hexadecimal (or octal, in the case of ternary beats). I then display the seq along with its number.
To generate the seqs, I go in reverse: running through all numbers from 0 to FF (or 0 to 255, as @H_Tachibana did) and converting the numbers to binary.

Now, it’s important to remember that the number of steps in a seq is probably not the same as the number of beats. For beat patterns, it’s quite frequent to have four subdivisions per beat (16ths in the case of 4/4). So, it can be convenient to have each beat represented by a hex digit. A bar is a four-digit number. Some of these patterns are fairly common so it’s neat to have a way to document them.
And, of course, when you have such a routine (in SPi, Pd, Python, JS…), you can generate all possible sequences (64k of them, for a full bar of 4/4 with 16ths). Or just generate them individually, on the fly.

5

There is no point in going into Python/Ruby/C/xyz “competitions” here, but since I know one possibly more idiomatic Ruby version, I’d share it here:

[1,0].repeated_permutation(8).each { puts _1.inspect } # prints something similar to OP
all_patterns = [1,0].repeated_permutation(8) # as a list of list (actually an enumerator
2 Likes
6

Thank you very much.
I only know Ruby from Sonic Pi.
I did not know about “repeated_permutation and combination”.

7

As simple as the python code.

8

Code to run all the patterns:

BD = (ring 1, 0, 1, 0, 1, 0, 1, 0)

[1,0].repeated_permutation(8).each do |snare_pattern|
  puts snare_pattern
  
  snare_pattern.each do |hit|
    sample :drum_snare_soft,amp:1 if hit == 1
    sample :drum_bass_soft,amp:1 if BD.tick == 1
    sample :drum_cymbal_open,amp:0.2
    sleep 0.5
  end
end
1 Like