Re: articulate.ly with "rall" not working?

[Malte Meyn]

On 13.03.2012 03:52, Peter Chubb wrote:
>>>>>> "Thomas" == Thomas Morley <address@hidden> writes:
> 
> Thomas> \version "2.14.2" \include "articulate.ly"
> 
> Thomas> \score { \unfoldRepeats \articulate << \relative c' { c8-. d-.
> Thomas> e-.  f-.  g-.-"rall" f-.  e-.  d-.  c-.  d-.  e-.  f-.  g-.
> Thomas> f-.  e-.  d-.  c1-.  }
>>>>
> Thomas>   \midi { } }
> 
> The rallentendo actually does happen, but at the tempo you're going, it's not
> paticularly deep.
> 
> If I add a \displayLilyMusic before the \unfoldRepeats I see:
> 
> << {
>      { c'8*1/2 r } { d' r } { e' r } { f' r } { \set tempoWholesPerMinute = 
> #(ly:make-moment 9 1 0 1)
> 
> 
>        { g'-"rall"  r } } { f' r } { e' r } { d' r } { c' r } { d' r } { e' r 
> } { f' r } { g' r } { f' r } { e' r } { d' r } { c'1*1/2 r } 
>    } >>
> 
> 
> Note the setting of tempoWholesPerMinute.  This corresponds to a 40% slowdown.
> The default is MM crotchet=60, this should slow down to about MM
> crotchet=36.  However, note this is the *only* tempo adjustment ---
> you need to start with a tempo.
> 
> I suggest
> \version "2.14.2"
> \include "articulate.ly"
> 
> \score {
> \displayLilyMusic        \unfoldRepeats \articulate
>         <<
>      \relative c' {
>          \set tempoWholesPerMinute = #(ly:make-moment 4 80)
>              c8-. d-.  e-.  f-.
>             g-.-"rall" f-.  e-.  d-.
>              c-.  d-.  e-.  f-.
>              g-.  f-.  e-.  d-.
>              c1-.
>     }
>   >>
>   \midi { }
> }
> 
> --
> Dr Peter Chubb                                        peter.chubb AT 
> nicta.com.au
> http://www.ssrg.nicta.com.au          Software Systems Research Group/NICTA
> 
Hm. I see two problems:
1. Did I understand right, that -"rall" changes the tempo in a single
step? That’s more like “subito meno mosso” than “rallentando”, isn’t it?.
2. \set tempoWholesPerMinute doesn’t have any effect in the midi output.
Is that a bug or a misunderstanding? I use Lilypond 2.14.2-1 Linux 64.