music2sound is a sound generator using music scores (also called music sheets).
A simple music writing language has been developed, for example: "BPM=85,A6,Ab2,C5,1/4-C3"
Generators are pieces of code capable of generating a sound from music written in this language. To date, three generators are offered:
- BeepGenerator: based on the "beep" utility. Uses the sequencing features of "beep".
beep is available in the Ubuntu repos.
More info:
http://linux.die.net/man/1/beep
- MidiGenerator: a MIDI filewriter, coupled with the "TiMidity++" synthethizer. The MIDI file writing is based on the Java MIDI file writing sample of Kevin Boone : http://kevinboone.net/javamidi.html
TiMidity++ is available in the Ubuntu repos.
More info:
http://timidity.sourceforge.net/
- SoxGeneratpr: based on WAV sounds of piano keys and SoX audio copy/pasting. Piano samples from http://theremin.music.uiowa.edu/MIS.html
SoX is available in the Ubuntu repos.
More info:
http://sox.sourceforge.net/Docs/FAQ
In the future, more generators might be implemented.
For each generator, a simple command-line test is supplied.
For example, to play a single note with MidiGenerator:
$ rosrun music2sound test_midi_generator "A4"
To play a score stored in a file :
$ rosrun music2sound test_midi_generator "rospack find music2sound/data/music_scores/tetris.score"
A simple ROS wrapper has been implemented for each of the generators. It is called "ros_*_generator", for instance "ros_sox_generator". It subscribes to a "std_msgs::String" message and generates the corresponding sound.
You need three terminals. For example, with MidiGenerator:
T1: $ roscore
T2: $ rosrun music2sound ros_midi_generator
To play a single note :
T3: $ rostopic pub /ros_midi_generator/msg std_msgs/String "data: 'A6'"
To play a score stored in a file :
T3: $ rostopic pub /ros_midi_generator/msg std_msgs/String "data: 'rospack find music2sound/data/music_scores/tetris.score'"
LGPL v3 (GNU Lesser General Public License version 3).