Re: MIDI and template for dynamics

[Jan-Peter Voigt]

Hello Kaj,

while writing my last message, I was distracted and in a hurry ;-)

Am 31.05.2016 um 08:33 schrieb Kaj Persson:
> Sorry, I do not exactly understand the intention of your proposal. I 
> am almost always using two \score sections, one for the midi and one 
> for the layout (pdf). There are many reasons for that, among others 
> "\unfoldRepeats" to take care of repeats. There are also other 
> circumstances motivating this procedure. 
...
> I might have misunderstood you, and do not see the innermost intention 
> with your suggestion, so please come back and explain.
If you have two score, one for MIDI and one for PDF, you can tag dynamic 
events with (for example) \tag #'only-midi and then \removeWithTag 
#'only-midi inside the PDF score, when you combine more then one voice 
in the Staff. There are sometimes different needs for dynamics, when 
creating PDF or MIDI.
If this is a common need, you might also take a look at 
http://lsr.di.unimi.it/LSR/Item?id=372

> After all, your suggestion with including the dynamics template in the 
> voice itself is the best for the moment, because it in fact does work. 
> I have tested with the music I am working with for the moment. The 
> result is what I want, and the midi, the strength of the notes is 
> following the dynamics template. However it is a pity that one has to 
> define the template in every voice, instead of every staff or even 
> group of staves. And still, I cannot understand why I have to do so, 
> and what is  happening when I put a name on one of the voices, as it 
> works without this name.
I don't understand, why it *does* work in your first example without a 
name. As long as the dynamic events are created in a separate voice, 
they shouldn't touch the midi-notes in any *other* voice. If you add the 
template to the staff, it should create a separate voice context (if not 
already defined with \new Voice). I didn't work that much with MIDI in 
lilypond, so I don't know, if the dynamic level somehow relates to or is 
stored with the context-id.

But I did work a lot on vocal music. You might have a look at my article 
at http://lilypondblog.org/2014/07/trees-music-and-lilypond/, where I 
describe some theoretical aspects on the hierarchical structure of 
lilypond scores.
To make it short: If you have one function "createScore" that  looks for 
a global - in your case dynamic - variable/template for this score, it 
can automatically construct the needed score and add the dynamics to 
every voice.

If you are interested, I can explain more concisely.

HTH
Jan-Peter