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Re: Chromatic staff

From: kevin
Subject: Re: Chromatic staff
Date: Mon, 23 Oct 2006 13:43:34 -0700
User-agent: Gnus/5.1006 (Gnus v5.10.6) XEmacs/21.4 (Security Through Obscurity, linux)

Thanks for the response.  Changing the line-count sounds simple.
After you mentioned this, I found the relevant documentation already
open in browser, though previously invisible.

I'm still trying to get a handle on the Lilypond documentation for
more abstract areas.

The idea of modifying the pitch make me a little uncomfortable, but it
might work as a first attempt.  Would transposing still work?  I
suppose that I'll find out.

I would prefer to find the code which decides where to place a note
vertically based upon its pitch.

ly:pitch-semitones looks useful and Pitch::semitone_pitch look
useful.  Score or music classes may be useful as well.  Perhaps
Score_engraver is useful.  That seems to have something to do with X
and Y. 

Mats Bengtsson <address@hidden> writes:

> Getting a 4 line staff is trivial, just add
> \override Staff.StaffSymbol #'line-count = #4
> at the beginning of your stave. You can also make this setting apply to
> all Staff contexts, see the documentation.
> For the vertical position, one idea would be to implement a music
> function in
> Scheme that modifies the pitch of each note so it gets the pitch it
> would have
> if we read the chromatic notation as if it would have been standard
> notation.
> The main disadvantage of this solution is that the MIDI output gets
> completely
> wrong, otherwise I think it's the easiest solution.
>    /Mats
> Kevin Dalley wrote:
>> I know that alternative notation and chromatic staffs comes up once in
>> a while.  Let's choose a simple one, and assume that I can write some
>> C++, Python, and Scheme.  How would I change the notation to using 6-6
>> Tetragram?
>> The notes for this notation look the same as the standard notation,
>> they are just in different positions, spaced chromatically rather than
>> diatonically.
>> I see 2 major items:
>> Create a 4 line staff, rather than the standard 5 line staff.  Of
>> course, the lines represent different notes than the standard staffs
>> represent.
>> Place the notes in the correct position vertically.  This is probably
>> not too difficult for an experience Lilyponder, which I am not.  For
>> each pitch, the note is in some well-defined vertical position
>> relative to the staff.  A sharp and B flat are in the same position, B
>> and B flat are in different positions.
>> Where do I look for a start to solving this problem?
>> _______________________________________________
>> lilypond-devel mailing list
>> address@hidden
> -- 
> =============================================
>       Mats Bengtsson
>       Signal Processing
>       Signals, Sensors and Systems
>       Royal Institute of Technology
>       SE-100 44  STOCKHOLM
>       Sweden
>       Phone: (+46) 8 790 8463                         
>         Fax:   (+46) 8 790 7260
>       Email: address@hidden
>       WWW:
> =============================================

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