Re: Turkish makam using regular.ly

[Hans Åberg]

> On 21 Oct 2018, at 10:10, Graham Breed <address@hidden> wrote:
> 
> On 2018-10-20 02:24, Adam Good wrote:
>> Hi Hans,
>> I hope this email finds you well. Some questions for you if you have time 
>> plus I want to share my close to complete turkish makam file based on the 
>> file you sent me originally plus regular.ly
>> here's the new makam include file:
>> turkish-makam-ADAM.ly
> 
> I think key signatures can also be processed by regular.ly.  So they can be 
> defined in a tuning-independent way (although in this case it's a tuning that 
> looks a lot like 53et).

Yes, that seems to work. Use
  makamHicazkar = #'((0 . 0) (1 . -4/10) (2 . -1/10) (3 . 0) (4 . 0) (5 . 
-4/10) (6 . -1/10))
  makamHicazkar = #(scale-scale makamHicazkar tuning)
where the number 10 is the double of the sharp value 5 in E53, I think, instead 
of
  makamHicazkar = #'((0 . 0) (1 . -24/53) (2 . -6/53) (3 . 0) (4 . 0) (5 . 
-24/53) (6 . -6/53))

So one might define a tone-step variable 1/(2(M - m)) from the ET number, where 
M and m are the ET values for the major and minor seconds, and write the scale 
in terms of multiples of that.