piano tuning / Indian music scales...?

[Grant Richter]

The Ensoniq Mirage had an alternative OS
that allowed microtuning. Also the TX81Z I
believe supported micro-tuning.

----------
> From: Thomas Hudson <thudson at cygnus.com>
> To: RevTor at aol.com
> Cc: synth-diy at mailhost.bpa.nl
> Subject: Re: piano tuning / Indian music scales...?
> Date: Wednesday, January 19, 2000 8:29 AM
> 
> RevTor at aol.com wrote:
> > 
> > All,
> >   Im in the process of getting my CV keyboard up and running and since
I
> > already have a midi/cv converter, I was thinking of maybe setting this
up in
> > a different scale, perhaps a microtonal style tuning.?  correct me if i
am
> > wrong, but is this the Indian scale?  Sure you can rig up a decent
sitar
> > patch, but it doesnt sound too convincing with the standard piano
tuning.
> > So.. Is this possible?  Could it be done by replacing the 100ohm
resistors on
> > each key to another value?  Or would pots be needed and each one need
to be
> > tuned?  Or is the basic piano key architecture not sutiable for what I
want
> > to do?  Anyone have any links off hand relating to this?  Thanks again,
> > ~SteveM
> 
> While a lot of patches can get the sitar sound, if you ever start trying
> to imitate some of the great sitar players, you come away disapointed
> because the western scale doesn't match up with the indians scales.
> 
> Indian music uses several different increments (Sruti) between notes
> depending upon the raga being played:
> 
> SA=C
> SA + First Sruti = 22 cents
> SA + Second Sruti = 90 cents
> SA + Thrid Sruti = 70 cents
> 
> To create the second note of a scale you add the either the first sruti
> (22),
> the first and second sruti (112), all three (182), or two of the first
> and
> one each of the second and third (204).
> 
> So the scale would go:
> 
> SA = Start
> RI = one of four pitches
> GA = ditto
> MA = ditto
> PA is always 702 cents above SA
> DHA = one of four
> NI = ditto
> 
> Happy microtuning.
> 
> Thomas