On Thursday 15 September 2005 20.48, [EMAIL PROTECTED] wrote: > Hi all, > > I am a new user of LilyPond and I am currently writing a program that > transforms scores expressed in a piano-roll-like format into LilyPond > scores, for the purpose of typesetting/printing. > > In the source format, music is expressed (like Midi, I suppose) as > strings of notes with absolute durations, without a notion of time > signatures, barlines, ties, etc. Is there a tried-and-true algorithm > for converting such "notes" into their proper equivalents in LilyPond, > given a time signature?
I have 2 ideas: - You could go through MIDI (i.e. let your program convert from piano-roll-format to MIDI), and use lilypond's midi2ly program to create the .ly file - If you are familiar with python, write a piano-roll-to-.ly converter based on midi2ly.py. In this case, you may only distribute the converter under the terms of the GNU GPL. > I'm especially thinking of how to resolve a note like "c3" (where 3 > means 3 quarter note beats) into Lilypond's "c2." Any suggestions? I > suppose this problem relates to "quantization" but in this case, the > input data is mostly "clean" and unambiguous. I don't think the > solution should be too compilcated. This is done by midi2ly, so both the above solutions would fix this. -- Erik _______________________________________________ lilypond-user mailing list [email protected] http://lists.gnu.org/mailman/listinfo/lilypond-user
