An Algebra for
Tree-Based Music Generation
About this project We present an algebra whose operations act on musical
pieces, and show how this algebra can be used to generate music in a
tree-based fashion. Starting from input which is either generated by a
regular tree grammar or provided by the user via a digital keyboard, a
sequence of top-down tree transducers is applied to generate a tree over
the operations provided by the music algebra. The evaluation of this tree
yields the musical piece generated.
Implementation
The music algebra has been realised in the software system Treebag. To
try it out, first check that you have Java 5.0 SE installed on your
computer. Second, download the files treebag.jar and jmusic.jar and type
java -cp :treebag.jar:jmusic.jar gui.worksheet
at the prompt. If everything works correctly, then this should bring up
Treebag. To look at the examples, download and decompress the file
examples.tar.gz. This
results in two directories titled
algebra/canon and algebra/variations, respectively, each containing a
worksheet file. These worksheets can be loaded into Treebag by
choosing the item Load in the Worksheet menu (which is
found in the upper-left corner). To listen to the generated pieces,
select Play Midi in the menu Show of the Music
Display. For more information about Treebag, please see the systems homepage.
Download / Links
System
| Treebag |
[jar] |
| JMusic |
[jar] |
| Examples |
[tar.gz] |
Generated pieces
| Variation 1 |
[mid] |
| Variation 2 |
[mid] |
| Variation 3 |
[mid] |
| Variation 4 |
[mid] |
| Canon 1 |
[mid] |
| Canon 2 |
[mid] |
Reference
| Treebag |
[html] |
| JMusic |
[html]
|
Last updated Jun 11 2007 by Johanna Högberg.
|