On Tue, 13 Aug 2013 11:50:16 -0400 Carl Peterson <carlopeter...@gmail.com> wrote:
> On Tue, Aug 13, 2013 at 11:19 AM, Richard Shann > <richard.sh...@virgin.net>wrote: > > > > > here is your problem. You are hoping that the timing of your > > keypress could be interpreted and a duration of note estimated from > > it. Such systems have been tried many times, and are offered by > > programs that don't care if you succeed or not, as long as you buy > > the program. They don't work because of the subtleties of timing, > > rests and notation (consider, 1/4 note tied to 1/8 note is the same > > duration as dotted 1/4 note). > > Well, I would like to be proved wrong; the moment you hear of a way > > of doing it I promise I will implement it in Denemo: everything is > > there just waiting for someone to invent the algorithm. > > > > Richard, > ICBW, but I think that *usually*, 4. vs 4~8 depends on the context > and the time signature. For instance, I was told to break and tie > notes if they cross the midline of a duple or quadruple measure (so > "c4 c4. c8 c4" would be written as "c4 c4~c8 c8 c4" in 4/4 and "c8 d > e4 f8 g" as "c8 d e~e f g" in 6/8), but there are others that are > largely stylistic (such as whether to break a quarter note if it > crosses any beat at all). yes, I just chose an example at random, there is no 1-1 relationship between performance and notation; for any entry system to be useful it has to be highly reliable, fixing mistakes has to be counted as a very high penalty for any entry system. That is why Optical Music Recognition (OMR, see Audiveris for example) is still slower than entering music by playing in, usually. > > One option would be to have a MIDI-entry mode and notate based on > actual durations (i.e., notate a 4. if that was what was played), > then present it to the user to review with a popup of some sort to > allow for alternate notations (e.g., show c4~c8 or c8~c4 [depending > on where the beat is] as an alternate to c4.) before entering into > the score proper. The set of alternate notations in music is very large. For music that sticks to a reasonably small set of idioms presenting these to the program first and playing them on the MIDI keyboard to teach the program how you play them sounds like a better bet. This would be a similar task to the OMR, and if someone creates a library that does this I'll be the first to use it. If you can read music fluently and have a lot of music to enter sequentially into LilyPond then Denemo gives you a way of leveraging your sight-reading skill to enter the music by allowing you to enter it "in music time" - that is you can keep track of where you are in the music entry process because you are reading and playing the music as music, not as a set of letters with numbers, dots, apostrophes etc. But if I could cut it down to a single play through instead of two, I would be even happier. Richard _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
