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arcade sounds and chiptunes for ruby and c
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|~~ |~~ | | :$: bloopsaphone :$: `''''''''''''''''` for writing chiptune-style songs in c or ruby. you know: the sounds of ataris, gameboys and the like. ~ -$- ABOUT this is a small c library for sending chiptunes through portaudio, which is a rather light cross-platform audio lib. <http://www.portaudio.com/> right now i'm only including ruby bindings. you are welcome to contribute code to hook up to other languages, though. i wrote this for h-ety h. <http://hacketyhack.net/> i don't have binaries ready for this yet, so if you're on windows or os x, you may have to wait until HH comes out at ART AND CODE. the tribulations you face. ~ -$- THE BLOOPSAPHONE THEME SONG (in ruby) require 'bloops' # the bloops o' phone b = Bloops.new b.tempo = 320 # melodious s1 = b.sound Bloops::SQUARE s1.punch = 0.5 s1.sustain = 0.4 s1.decay = 0.2 s1.arp = 0.4 s1.aspeed = 0.6 s1.repeat = 0.6 s1.phase = 0.2 s1.psweep = 0.2 # beats s2 = b.sound Bloops::NOISE s2.punch = 0.5 s2.sustain = 0.2 s2.decay = 0.4 s2.slide = -0.4 s2.phase = 0.2 s2.psweep = 0.2 # the tracks b.tune s1, "f#5 c6 e4 b6 g5 d6 4 f#5 e5 c5 b6 c6 d6 4 " b.tune s2, "4 c6 4 b5 4 4 e4 4 c6 4 b5 4 4 e4" # and away we go b.play sleep 1 while !b.stopped? ~ -$- BUILDING FOR RUBY If Ruby is in your path and PortAudio 1.9 or greater is installed: make ruby To install PortAudio 1.9 under Ubuntu: aptitude install portaudio19-dev To build from source isn't too bad. Download PortAudio 1.9 and build it. <http://www.portaudio.com/archives/pa_stable_v19_20071207.tar.gz> Like this: $ tar xzvf pa_stable_v19_20071207.tar.gz $ cd portaudio $ ./configure $ make $ sudo make install Then go back to Bloopsaphone and do a `make ruby`. ~ -$- THE IDEALS, -1- ASYNCHRONOUS. You send it a song and it plays in the background. You'll get an event when it finishes. -2- SMALL. This is just a toy, I don't want it to be very big and comprehensive. Just to play little tunes with a nostalgic arcade sound rather than the CASIO-stylings of most MIDI. -3- CUSTOM NOTATION. Someone told me about Nokring, iMelody, numbered musical notation and I did some reading. They're little languages for texting yourself a ringtone. <http://en.wikipedia.org/wiki/Ring_Tone_Transfer_Language> <http://homepage.mac.com/alvinmok/ericsson/emelody.html> Bloopsaphone uses a variation on RTTTL. Instead of commas, I use whitespace. A rest is simply a number. A plus sign moves everything up an octave. A minus down an octave. The Simpsons' Theme, for instance, would be: 32 + C E F# 8:A G E C - 8:A 8:F# 8:F# 8:F# 2:G Which translates into: * a 1/32nd note rest. * change one octave up. * C quarter note. * E quarter note. * F# quarter note. * A eighth note. * G quarter. * E quarter. * C one-quarter note. * change one octave down. * A eighth. * Three F# eighths. * G half note. The colons are optional. They are there because you can place an octave number after each note. Somehow "8B6" (an eighth note of B at the sixth octave) looks more confusing than "8:B6". I guess I figured that the timing "8" is conceptually separate from the actual tone "B6", even though they both comprise the note itself. -4- SERIALIZE SOUNDS. To accomodate passing instruments between ruby and c, bloopsaphone comes with a tiny file format for describing sounds. You can find examples of these in the sounds/ folder in this distro. Possible sound types are 'square', 'sawtooth', 'sine' and 'noise'. All other settings go from 0.0 to 1.0. The 'freq' setting is only used if the sound is played without a tune.