This software contains very performant algorithms for melody-based searching of MIDI files. It was written in 2002-2003 as a part of C-BRAHMS algorithm research project at the University of Helsinki, Department of Computer Science. For more information, see e.g.:
The search engine was originally written in Ruby 1.6 with extensions in C. It has been partially ported to Ruby 2.0 in August 2013. Originally the platform was Linux; now it has been tested on OS X 10.8 only.
At the moment this software is unmaintained. Bug fixes are welcome, but don't send feature requests or bug reports without a fix.
-
Install Ruby 2.0.0, SMF 0.15.12 and other dependencies:
gem install smf daemons sinatra puma -
Compile C extensions:
rake build -
Download MIDI package and unpack it to public folder:
cd public wget http://www.cs.helsinki.fi/u/turkia/music/midi.zip unzip midi.zip -
Start the server:
admin/start_server.rb admin/start_webserver.rb -
Navigate to http://localhost:8080/index.html with your browser.
Version 0.3.3, August 30th, 2013:
- ported to Ruby 2.0.0 with minor refactoring, except a dependency from an Apache server replaced by Sinatra
- porting from 32 bit to 64 bit hardware has introduced bugs in some algorithms (P3, LCTS, Splitting). Debugging help is welcome.
- Java applet for piano keyboard based searches compiles but has not been tested as Java is nowadays usually disabled in browsers. It is included for purposes of historical interest.
Version 0.3.0, August 25th, 2012:
- ported from Ruby 1.6 to Ruby 1.9.3 and SMF 0.15.12
- piano roll image generation library could not be found; this functionality has been removed.
- geometric P3 crashes
- mostly untested
Version 0.2.7, August 25th, 2003:
- New algorithms: geometric P3
- Piano roll images of the music pieces (access trough song list page)
- Similarities calculation (experimental, access through song list page)
- New compiler (gcc 3.2.2) improved performance quite a lot for P2 (and SIA(M)E2).
Version 0.2.6:
- New algorithms: Dynamic Programming, LCTS, Splitting.
- Optional text pattern to limit the search by e.g. composer or title. This speeds up searches since only a part of database is scanned.
- Refactorings in the code; some documentation added.
Version 0.2.4:
- New algorithms: P2
- Improved implementation of P1
- Tester class that samples test patterns from the database.
- Various histograms can be calculated from note data
- Lots of refactoring in the code
- More documentation added
- Publications included in the package
- Metatexts are packed using zlib
- Prototypes of P1 and P2 are provided for learning and testing.
- Attempts to calculate similarities between songs implemented but not available in the client interface by default because of incoherent results.
- Also two patented algorithms SIA(M)E1 and SIA(M)E2 were implemented; these are not included in the public distribution package.
Copyright notice for Mutopia Project MutopiaBSD licensed files: Permission is hereby granted, without written agreement and without license or royalty fees, to use, copy, modify, distribute, perform and record this music and to distribute, perform and record modified versions of this music for any purpose, provided that the above copyright notice, this paragraph and the following disclaimer appear with all copies of this music, whatever the format of the copy, printed, audio or otherwise. THIS MUSIC IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
Overview (original version of 2003):
-----------
| applet |----
----------- | http -------------- drb ------------
|---------| client.rb |---------| server.rb |
----------- | -------------- ------------
| HTML form |---- | 1..1
----------- |
| 0..*
----------------
| SongCollection |
----------------
| 1..1
|
| 0..*
------
| Song |
------