Re: guitar/bass as a transposing instrument and midi

[Caagr98]

I think you could use a combination of \transposition and \transpose. 
\transposition changes how the pitches are written, but not the midi. 
\transpose changes both.

On 10/27/17 13:50, bb wrote:
> A /transposing instrument/ is one in which the absolute pitches of the notes 
> played on the instrument are shifted up or down by a certain amount, compared 
> to how they are written in notation. \clef "treble_8" for guitar takes 
> account of, but is not always written, as that transposing property ias a 
> standard. Bass is a transposing instrument as well. \clef "bass_8"works as 
> well but I found it never written in any bass notation.
> 
> Writing tabulatures  can easily be corrected with \transpose in the  \new 
> TabStaff code section. 
> 
> That does not work the easy way for midi. The resulting midi-sound is an 
> octave higher in tone.
> 
> i cannot find a solution to lower the pitch for midi only. Every \transpose 
> alters the written notes as well. Eventually one has to write an aditinal 
> special music for midi? 
> 
> Thanks for any help, regards
> 
> I add a simple test file. Is there any soultion?
> 
> \version "2.19.65"
> guitar = \relative c {
>   \clef "treble_8"
>   r4 a b c d e f g
> }
> bass = \relative c, {
>   %\clef "bass_8"
>   \clef bass
>   a b c d e f g
> }
> \score {
>   <<
>     \new Staff  { \guitar }
>       \new Staff  {
>         %\transpose c c' % with this \transpose midi sounds to high  but 
> notation is correct
>         \bass}
>     >>
>   \layout {  }
>   \midi { }
> }
> 
> 
> 
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