Re: Sustain in midi output of Piano Centered Dynamics Template

[Trevor Daniels]

Anthony

It seems that this is an error in the template which has probably always 
been there.

As you have found, it is necessary to place the pedal up/down indications in 
*all* the staves in order for the midi output to correctly simulate the 
action of a piano sustain pedal.  However, this will cause the Ped ... * 
indications to appear beneath all staves too, which is undesirable.  This is 
why the template you mention has two scores - one with a layout block to 
generate the correct printed output and one with a midi block to generate 
the correct midi output.  The midi score should have the pedal indications 
in both staves, as you have discovered.  I'll correct the template in the 
2.11 docs shortly.

Thanks for pointing this out.

Trevor

----- Original Message ----- 
From: "Anthony" <address@hidden>
To: <address@hidden>
Sent: Friday, May 02, 2008 7:00 PM
Subject: Sustain in midi output of Piano Centered Dynamics Template


> I noticed that sustain information was not getting generated in the
> midi file output when using the Piano Centered Dynamics template
> located on the lilypond website.  I've tried the same template with
> 2.10.33 as well as 2.11.45.
>
> This is the current template for the piano centered dynamics:
>
>     upper = \relative c'' {
>       \clef treble
>       \key c \major
>       \time 4/4
>
>       a b c d
>     }
>
>     lower = \relative c {
>       \clef bass
>       \key c \major
>       \time 4/4
>
>       a2 c
>     }
>
>     dynamics = {
>       s2\fff\> s4
>       s\!\pp
>     }
>
>     pedal = {
>       s2\sustainDown s2\sustainUp
>     }
>
>     \score {
>       \new PianoStaff <<
>         \new Staff = "upper" \upper
>         \new Dynamics = "dynamics" \dynamics
>         \new Staff = "lower" <<
>           \clef bass
>           \lower
>         >>
>         \new Dynamics = "pedal" \pedal
>       >>
>       \layout {
>         \context {
>           \type "Engraver_group"
>           \name Dynamics
>           \alias Voice % So that \cresc works, for example.
>           \consists "Output_property_engraver"
>
>           \override VerticalAxisGroup #'minimum-Y-extent = #'(-1 . 1)
>           \override DynamicLineSpanner #'Y-offset = #0
>           pedalSustainStrings = #'("Ped." "*Ped." "*")
>           pedalUnaCordaStrings = #'("una corda" "" "tre corde")
>
>           \consists "Piano_pedal_engraver"
>           \consists "Script_engraver"
>           \consists "Dynamic_engraver"
>           \consists "Text_engraver"
>
>           \override TextScript #'font-size = #2
>           \override TextScript #'font-shape = #'italic
>
>           \consists "Skip_event_swallow_translator"
>
>           \consists "Axis_group_engraver"
>         }
>         \context {
>           \PianoStaff
>           \accepts Dynamics
>         }
>       }
>     }
>     \score {
>       \new PianoStaff <<
>         \new Staff = "upper" << \upper \dynamics >>
>         \new Staff = "lower" << \lower \dynamics >>
>         \new Dynamics = "pedal" \pedal
>       >>
>       \midi {
>         \context {
>           \type "Performer_group"
>           \name Dynamics
>           \consists "Piano_pedal_performer"
>         }
>         \context {
>           \PianoStaff
>           \accepts Dynamics
>         }
>       }
>     }
>
>
> To get pedals to appear as events in the midi file I had to change two
> lines in the midi score section from:
>
>         \new Staff = "upper" << \upper \dynamics >>
>         \new Staff = "lower" << \lower \dynamics >>
> to
>         \new Staff = "upper" << \upper \dynamics \pedal >>
>         \new Staff = "lower" << \lower \dynamics \pedal >>
>
> as well as keep all the other stuff regarding the pedal (well, I've
> not messed around since I get pedal events now).
>
> I was just curious if this had worked previously or if simply nobody
> noticed it wasn't working. :)
>
> - Anthony
>
>
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