Re: MIDI and Volta repeats in parallel music
Michael == Michael Ellis michael.f.el...@gmail.com writes:
Well, in this case you don't have any conflicting music in the two
Voice contexts (because the \structure isn't a printed music
voice). So you can simply leave out the \voiceXXX commands and
you're ready.
What's more, is there a reason to have the structure in a different
voice?
If you have it in the *same* voice, voltas will get unfolded properly
too:
\score {
\unfoldAllRepeats \new Staff = Music {
\new Voice = Music
\music
\structure
}
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Re: MIDI and Volta repeats in parallel music
On Sun, Nov 23, 2014 at 4:46 PM, pe...@chubb.wattle.id.au wrote: What's more, is there a reason to have the structure in a different voice? Good question. For me, it's mostly about the DRY principle (don't repeat yourself). I'm in the process of writing a program that tries to maximize one's opportunities to exploit the repetitive aspects of most compositions when entering the notation for multiple voices. It's a work in progress, but if you're curious it lives at https://github.com/Michael-F-Ellis/TransLily As for the whole \repeat unfold business, I'd love to understand why LP can merge repeats in the PDF but can't do it MIDI. I know the developers are really smart folks, so it must be way more challenging than I'm imagining. ___ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
Re: MIDI and Volta repeats in parallel music
Michael == Michael Ellis michael.f.el...@gmail.com writes:
Michael On Sun, Nov 23, 2014 at 4:46 PM, pe...@chubb.wattle.id.au
Michael wrote:
What's more, is there a reason to have the structure in a different
voice?
Michael Good question. For me, it's mostly about the DRY principle
Michael (don't repeat yourself). I'm in the process of writing a
Michael program that tries to maximize one's opportunities to exploit
Michael the repetitive aspects of most compositions when entering the
Michael notation for multiple voices. It's a work in progress, but
Michael if you're curious it lives at
Michael https://github.com/Michael-F-Ellis/TransLily
My point I think is that the structure is the structure of the voice,
not the structure of the staff. Which is why, BTW, the MIDI repeats
don't unfold.
Visibly the structure voice shows the repeats, but the repeats aren't
actually in the music voice.
So when you unfold you get:
\music
{ \structure \structure \structure }
I
Michael As for the whole \repeat unfold business, I'd love to
Michael understand why LP can merge repeats in the PDF but can't do
Michael it MIDI. I know the developers are really smart folks, so it
Michael must be way more challenging than I'm imagining.
t can't merge them in the PDF either. But when it prints them as
repeat symbols, you can't tell from the printout.
Try this:
---
\version 2.18.0
music=
\new Staff
\new Voice \relative c' { c4 c c c }
\new Voice \relative c' { \repeat volta 2 { s1 }}
\score {
\music
}
\score {
\unfoldRepeats \music
}
---
And look at the PDF. The second system shows the unfolded structure.
Peter C
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Re: MIDI and Volta repeats in parallel music
On Sun, Nov 23, 2014 at 10:33 PM, Peter Chubb pe...@chubb.wattle.id.au
wrote:
My point I think is that the structure is the structure of the voice,
not the structure of the staff. Which is why, BTW, the MIDI repeats
don't unfold.
Visibly the structure voice shows the repeats, but the repeats aren't
actually in the music voice.
I do understand that and it makes sense for LP to support almost any crazy
thing a composer might do. As practical matter, however, having volte in
one voice and not another is extremely rare. I don't think I've ever seen
that in a score.
I haven't looked at the LilyPond code for \repeat, so I'm just guessing
here, but it seems to me that maybe \repeat unfold is wrong tool for job
since it operates at the level of music expressions. Maybe what's needed
is lower level code that operates at the level of midi file timing. I
think it's analogous to what LP has to do to put the repeat bars and other
staff-level annotations from one voice in the right spatial location to
relative to another voice's. That's a non-trivial task in itself, without
even getting into what LP does to avoid vertical collisions.
So it if were up to me (and it certainly isn't), I'd like to see some
effort put into developing a new command to designated one voice as a
'master' in the midi block, so that one might write something like
\score {
\structure \\ voiceA \\ voiceB ...
\midi {
\master \structure
}
}
to tell LP Keep track of the repeats in the master and copy/paste as
needed in the other voices to make it so.
This is a good discussion and I hope we can continue it. I'm going to be
traveling for the next 2 days so if my responses aren't immediate it
doesn't mean I'm not interested.
Cheers,
Mike
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Re: MIDI and Volta repeats in parallel music
On Wed, Nov 19, 2014 at 10:54 AM, Michael Ellis michael.f.el...@gmail.com
wrote:
I find it advantageous when working with multiple voices to keep
'structural' information (meter, tempo, etc.) in a separate voice that gets
combined with the other voices as illustrated in the image and code below.
In this example, the pdf layout is correct and the MIDI output honors the
tempo change, but doesn't repeat the second measure despite using a
separate score block with \unfoldRepeats.
After some further research, it appears that there is no general solution
(other than copying the volte into each voice) so I'm dropping the question.
I have another question that's somewhat related. If my example contained
notes above the middle line, you would notice that the stem directions
would still be up because I designated \music as \voiceOne and \structure
as \VoiceTwo.
music = \relative c' { c4 d e | f g a b }
structure = {
\time 3/4 \tempo 4=60 s2.
\time 4/4 \tempo 4=120 \repeat volta 2 { s1 }
}
\score {
\new Staff = Music {
\new Voice = Music { \voiceOne \music }
\new Voice = Structure { \voiceTwo \structure }
}
}
Is there a way to tell LilyPond to apply the usual single voice rules for
stem direction to \music?
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Re: MIDI and Volta repeats in parallel music
Am 22.11.2014 17:12, schrieb Michael Ellis:
I have another question that's somewhat related. If my example
contained notes above the middle line, you would notice that the stem
directions would still be up because I designated \music as \voiceOne
and \structure as \VoiceTwo.
music = \relative c' { c4 d e | f g a b }
structure = {
\time 3/4 \tempo 4=60 s2.
\time 4/4 \tempo 4=120 \repeat volta 2 { s1 }
}
\score {
\new Staff = Music {
\new Voice = Music { \voiceOne \music }
\new Voice = Structure { \voiceTwo \structure }
}
}
Is there a way to tell LilyPond to apply the usual single voice rules
for stem direction to \music?
Well, in this case you don't have any conflicting music in the two Voice
contexts (because the \structure isn't a printed music voice).
So you can simply leave out the \voiceXXX commands and you're ready.
using \voiceOne and \voiceTwo is not mandatory at all to manage two
voices. These commands only give LilyPond the necessary clues how to
deal with potential collision events and how to typeset the voices (e.g.
the stem direction you noticed, but also which voice would move to which
direction in case of collisions etc.).
HTH
Urs
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Re: MIDI and Volta repeats in parallel music
On Sat, Nov 22, 2014 at 11:16 AM, Urs Liska u...@openlilylib.org wrote: Well, in this case you don't have any conflicting music in the two Voice contexts (because the \structure isn't a printed music voice). So you can simply leave out the \voiceXXX commands and you're ready. using \voiceOne and \voiceTwo is not mandatory at all to manage two voices. These commands only give LilyPond the necessary clues how to deal with potential collision events and how to typeset the voices (e.g. the stem direction you noticed, but also which voice would move to which direction in case of collisions etc.). Works beautifully. Thanks, Urs! Mike ___ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
MIDI and Volta repeats in parallel music
I find it advantageous when working with multiple voices to keep
'structural' information (meter, tempo, etc.) in a separate voice that gets
combined with the other voices as illustrated in the image and code below.
In this example, the pdf layout is correct and the MIDI output honors the
tempo change, but doesn't repeat the second measure despite using a
separate score block with \unfoldRepeats.
music = \relative c' { c4 d e | f g a b }
structure = {
\time 3/4 \tempo 4=60 s2.
\time 4/4 \tempo 4=120 \repeat volta 2 { s1 }
}
\score {
\new Staff = Music {
\new Voice = Music { \voiceOne \music }
\new Voice = Structure { \voiceTwo \structure }
}
}
\score {
\unfoldRepeats { \structure \\ \music }
\midi {
}
}
I can get the MIDI to repeat by copying the \repeat into the music
variable, e.g.
music = \relative c' { c4 d e | \repeat volta 2 { f g a b } }
but that defeats the convenience of keeping the 'structural' info in a
separate voice. Is there a way to get the repeats in MIDI without
resorting to copying them into the notation for every voice?
Thanks,
Mike Ellis
*TransLily https://github.com/Michael-F-Ellis/TransLily-- a minimal
assistant for part transcription with LilyPond.*
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