function \transposition

[Jean-François Lucarelli]

Hello,

First, excuse my poor english, but I've found a little bug in
the "\transposition" command (for MIDI output).

For ascendent transposition (trupet e.g.), " \transposition d' " works
correctly.
Also for descendant transposition (horn e.g.) " \transposition d " works also.

But for octave transposition (Contrabass e.g.), it doesn't works.

" \transposition c' " let the score inchanged, and " \transposition c "
(without ' or ,) descend the score for two octaves.

My version is "2.11.63"

Best regards, and congratulation for your big work.

Jean-François



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[Mats Bengtsson-4]

Jean-François Lucarelli wrote:

> Hello,
>
> First, excuse my poor english, but I've found a little bug in
> the "\transposition" command (for MIDI output).
>
> For ascendent transposition (trupet e.g.), " \transposition d' " works
> correctly.
> Also for descendant transposition (horn e.g.) " \transposition d " works also.
>
> But for octave transposition (Contrabass e.g.), it doesn't works.
>
> " \transposition c' " let the score inchanged, and " \transposition c "
> (without ' or ,) descend the score for two octaves.
>  

As far as I can see, this is exactly what you should expect if you read
the documentation.
In
http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Displaying-pitches#Instrument-transpositions
you see that the argument to the \transposition command is the pitch you
want to hear when a c' is played, which obviously means that
\transposition c'
doesn't change anything, whereas
\transposition c
should provide a MIDI output that sounds one (not two) octave down
compared to the notation, which it also does as far as I can see (and
hear).

   /Mats

> My version is "2.11.63"
>
> Best regards, and congratulation for your big work.
>
> Jean-François
>
>
>
> _______________________________________________
> bug-lilypond mailing list
> bug-lilypond@...
> http://lists.gnu.org/mailman/listinfo/bug-lilypond
>  

--
=============================================
        Mats Bengtsson
        Signal Processing
        School of Electrical Engineering
        Royal Institute of Technology (KTH)
        SE-100 44  STOCKHOLM
        Sweden
        Phone: [phone]
        Fax:   [phone]
        Email: mats.bengtsson@...
        WWW: http://www.s3.kth.se/~mabe
=============================================



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[Valentin Villenave]

On Fri, Oct 23, 2009 at 8:36 PM, Jean-François Lucarelli
<j-f.lucarelli@...> wrote:
> First, excuse my poor english, but I've found a little bug in
> the "\transposition" command (for MIDI output).

Greetings,

I suspect that's because the argument to \transposition is an absolute
pitch (not a relative one). You may want to have a look at my video
tutorials on... Oh, wait, you already did! :-)

Cheers,
Valentin


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