A thought (was: More on shruti-s)

Hi Paul,

On Wed, 22 Feb 2006, "wallyesterpaulrus" wrote:
>
> --- In tuning@yahoogroups.com, "Carl Lumma" <clumma@...> wrote:
> >
> > > > > <22 35 51|
> > > >
> > > > This seems significant.
> > > >
> > > > -C.
> > >
> > > Indeed! It leads quite naturally to the sruti scale given by S.
> > > Ramanathan, Erv Wilson, etc., as one of the JI possibilities.
> >
> > Which scale is that?
> >
> > -Carl
>
> See, for example, http://www.rit.edu/~pnveme/raga/Sruti.html -- but
> where two ratios are given (for Chyuta Panchama Madhyama), use only
> the first: 729/512. This choice, but not the other, preserves the
> constant structure / epimorphic property Gene was referring to. Kraig
> says the distinction between this note and the "wrong" one a schisma
> away is of aesthetic significance and can be heard by at least some
> Indian masters . . .

Not wanting to *flaunt* my ignorance here, but I've
never fully understood the use of the phrase "constant
structure" (pregnant with possibility though it is) in the
context of tuning. Does it have anything to do with the
ability to perform exact transposition of a motif to
another degree of the same scale?

Regards,
Yahya

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