source file: mills2.txt Date: Thu, 5 Sep 1996 21:25:45 -0700 Subject: Kami-Tuning List 821 From: Eduardo Sabat-Garibaldi Tuning List Mills College listproc@eartha.mills.edu To: Kami Rousseau TUNING Digest 821 Dear Kami : For almost 20 years I have been working on an instrument I call DINARRA. (read DEENAHRA), (from guitARRA DINamica). DINARRA is a 53/Oct guitar. The very position of the frets are according to one ninth of a skhisma, resulting two sizes of commas. The bigger is about one and a half times wider than the smaller, and are 12 per Oct. Somebody asked me why I used this temperament and not 53 TET because the latter seems to be more simple than the former and is practically the same in practice. When I had the first DINARRA made I thought that the bigger spaces would help to see and find the proper fret to play, and in practice it helped a little. But the great improvement in order "to see" the notes was to paint the semitonic frets with colors according to a system. Yet I think the bigger spaces help us a little ("in" , "one before" or "one after" ) and on the other hand they are connected in some cases to the harmonic 7. In May 1995 I published the book "Principios de la Gama Dinamica" (in Spanish) where I included a Chapter (about 30 ps., 7 figs., 2 flow sheets and three computer programs) including the way to calculate the fret positions according to the physics. There is a BASIC program for PC. The parameters are The length of the chord, the "heights" between the chord and the plane of the fretboard, and the height of the frets. It may be adapted for other temperaments. The Dinarra strings are tuned just as for a Guitar, with some occasional variation (E, A, D, G, B, E , in commas Base-A, 31- 0- 22 (or 23)- 45- 9- 31). Acoustic Dinarras have a warm sound because there are many notes that make "echo" (sympathetic resonance) with one or several other open strings. When an acoustic guitar is refreted in a DINARRA the change of the emotional message of the sound is immediate and really incredible !!. It is necessary to experience the change for better understanding. Even more so, in time the wood of the instrument is reeducated giving out a very warm sound. Well, if you need more information I'll be happy to oblige. --Eduardo Eduardo Sabat-Garibaldi E-mail : esabat@chasque.apc.org Simon Bolivar 1260 Phone: (05982) 78 09 52 11300 Montevideo FAX : (05982) 29 83 91 (Automatico) Uruguay Received: from ns.ezh.nl [137.174.112.59] by vbv40.ezh.nl with SMTP-OpenVMS via TCP/IP; Fri, 6 Sep 1996 08:11 +0200 Received: by ns.ezh.nl; (5.65v3.2/1.3/10May95) id AA23731; Fri, 6 Sep 1996 08:13:02 +0200 Received: from eartha.mills.edu by ns (smtpxd); id XA23691 Received: from by eartha.mills.edu via SMTP (940816.SGI.8.6.9/930416.SGI) for id XAA12084; Thu, 5 Sep 1996 23:13:00 -0700 Date: Thu, 5 Sep 1996 23:13:00 -0700 Message-Id: <199609060210_MC1-958-2AF@compuserve.com> Errors-To: madole@ella.mills.edu Reply-To: tuning@eartha.mills.edu Originator: tuning@eartha.mills.edu Sender: tuning@eartha.mills.edu