[EMAIL PROTECTED] writes: > Ok, I guess I'm going to make a total fool of myself (again), but Matt > indicated > that the MIDI standard was limited to 16 channels, and that was the final > reason > for my problem. When you say it is fixed in 2.2, does it meant that: > > - The staffs beyond the 16th are ignored > - The 16 channels limit is not intrinsic to the file format, and more > channels > can be defined, even if some MIDI players might fail to read them. > Lilypond > does use these additional channels. > - None of the above, and I am making a fool of myself, again and again :-)
All of the higher number staves are mapped to channel 15. Dunno what happens to instrument changes, though. -- Han-Wen Nienhuys | [EMAIL PROTECTED] | http://www.xs4all.nl/~hanwen There is a distinction in Type 1 MIDI files between tracks and channels. A SMF (Standard Midi File) may contain unlimited tracks but a midi device is constrained to have at least 16 channels 0-15. Many software Devices will permit more channels but since the channel number is encoded as a nibble in the status byte they have to handle more than 16 tracks using some sort of re mapping algorithm. Unfortunatly the port change Message, which is supposed to inform some sort of player software that a particular track should be remapped to a different bundle of 16 channels appears to be widely disregarded and you need to set things up by hand in your sequencer. Patch changes likewise encode the channel as a nibble in the status byte and so patch changes in one track will effect all tracks receiving on that channel. The only thing that Lilypond can really do to help this situation which is, as far as I can see, a result of manufacturers guarding their proprietary software and it's customers, is rather than transmitting on channel 15 for all extra tracks is compute the higher tracks channel number modulo 16 and never ever use channel 9 Nigel. _______________________________________________ Lilypond-user mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/lilypond-user --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.647 / Virus Database: 414 - Release Date: 29/03/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.647 / Virus Database: 414 - Release Date: 29/03/2004 _______________________________________________ Lilypond-user mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/lilypond-user
