Carnatic Guitar

I tried a few major and minor triads on this instrument and was quite pleased with the results. (maybe I'm biased after investing significant resources on this) I wanted to see what triads could be reached when this instrument is tuned in perfect fourths with six strings. I've used Indian note names 's R G m P D N' to represent the notes of the major scale. s and p are case insensitive, whereas the rest are case-sensitive. Lower case stands for the flatter note. In the key of C, here is roughly how the notes map. s - C, r - Db, R - D, g - Eb, G - E, m - F, M - F#, p - G, d - Ab, D - A, n - Bb, N - B In earlier posts I've named 4 srutis of a note using number suffixes like R1, R2, R3, R4 etc. In a fretboard map since numbers may be useful for fingers, I've named the 22 srutis as s, r, r+, R, R+, g, g+, G, G+, m, m+, M, M+, p, d, d+, D, D+, n, n+, N, N+ Numbering the strings from top to bottom the 4th string starts as 'S'. There are 11...

Thanks to the amazing work done by the following expert craftsmen who worked on this instrument. Rex Kropf - Luthier, replaced fingerboard, installed frets and finished them like fine jewelry and setup up the instrument. Randy Allen - Custom slotted the fingerboard precisely to my exact specifications. It would be an understatement to say that these gentlemen worked on this project. I greatly appreciate their attention to detail and their dedication to their craft. Fret wire - Jescar FW57110 and FW55090, EVO Ni Free Gold ( http://www.jescar.com/fretwire.html )

Here is a simple web based tuner for the 53 EDO version of 22 srutis. http://my-helloo.appspot.com/static/veena_tuner.html The frets of a veena within each octave should be positioned to produce the following notes S, R1, R3, G1, G3, M1, M3, P, D1, D3, N1, N3

This is a continuation of my earlier post showing the derivation of 22 srutis, as a geometric construction in a log-log plot. This was created using LibreCAD . Figure.1, shows a cycle of pure fourths and fifths. Figure.2, shows a cycle of 53EDO tempered fourths and fifths. The numbers shown are frequency ratios in cents . An octave (2:1) is 1200 cents wide. Standard Western tuning divides this in 12 equal semitones ( 2^(1/12) : 1 ) 100 cents wide. How to read this construction. The X and Y axes are 1200 cents long, and they represent frequency ratios between 1 and 2. zero cents represents the ratio 1:1 1200 cents represents the ratio 2:1 Because of octave equivalence 1:1 and 2:1 refer to the same musical note. We are interested in finding the optimal number of frequency ratios that we can fit inside this space. We introduce a new ratio by adding a fret. If our instrument has two strings tuned an octave apart, each new ratio that we introduce ( say 'a' ), also introduces its ...

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