Re: (modified) Ben Johnston tuning system script

[Graham Breed]

On 23/12/17 17:00, address@hidden wrote:

> I would like to write music in just intonation.
>
> I would like to make a script similar to the (great!) Sagittal script of
> Graham Breed (http://x31eq.com/lilypond/) but for the so called Ben
> Johnston tuning system (BJTS) (I've noticed there was some discussion
> about it a while ago).

It'd be easier to start with the Extended Hemholtz-Ellis JI Pitch 
Notation support, in the same repository:

https://bitbucket.org/x31eq/microlily

This isn't a script, it's code that runs inside Lilypond.  There are 
outstanding issues, like the spacing comes out wrong, and it uses an old 
font anyway.

There's a big matrix that ties alterations to glyphs and you should be 
able to go in and change it.

> The BJTS identifies every just interval as a discrete note, so there is
> not one the same.

Yes, one problem would be if there are different ways of referring to 
the same interval and the code has to choose which to use.

> I use the so called Pythagorean scale as my basenotes (here I differ
> from the original tuning system) C - D - E - F - G - A - B. These
> basenotes are raised or lowered with all sorts of comma's and chroma's
> to represent the appropriate pitch.

That makes things easier as well.


                Graham