Archive for category ruby
personal ruby buddha machine
Posted by jone in Musikk, programming, ruby on 25. November , 2008
Some days ago I came across a post on the FM3 buddha machine. Finding it a fascinating concept, and being able to download their samples I sprinkled a few lines of ruby over them an stirred. Voilà – my own personal buddha machine playing wonderful ambient soundscapes in a random fashion. Using the sdl_ruby library, the whole thing became surprisingly simple:
#!/usr/bin/ruby -w require 'sdl' SDL.init(SDL::INIT_AUDIO) SDL::Mixer.open(44100,SDL::Mixer::DEFAULT_FORMAT,2,4096) clips = Dir.new('audio').entries.delete_if {|x| ! (x =~ /wav$/)} while true for i in 1..SDL::Mixer.allocate_channels(4) if not SDL::Mixer.play?(i) SDL::Mixer.playChannel(i,SDL::Mixer::Wave.load("audio/"+clips[rand(clips.length)]),rand(30)) end end sleep 0.5 end |
Numerical sorting in ruby
Quick note on how to do numerical sorting in ruby.
When calling sort, ruby will perform a lexicographical sorting by default, meaning that the following array
1 2 | a=["0","10","9","1"] a.sort.each{|val| p val} |
will output
"0" "1" "10" "9"
If this is not what you want, this might be it:
1 | a.sort{|x,y| x.to_i < => y.to_i}.each { |val| p val } |
outputs:
"0" "1" "9" "10"
Yay, blocks to the rescue:)