Contributions to http://xenharmonic.wikispaces.com/ are licensed under a Creative Commons Attribution Share-Alike Non-Commercial 3.0 License.

Portions not contributed by visitors are Copyright 2018 Tangient LLC

TES: The largest network of teachers in the world

Portions not contributed by visitors are Copyright 2018 Tangient LLC

TES: The largest network of teachers in the world

Loading...

The unit of measurement in the Indian system is the

shruti(sometimes spelled šruti, sruti or shruthi), which corresponds roughly to a quarter-tone. There are 22 shrutis per octave, 13 per fifth and 9 per fourth. A size of 4 shruti for the major whole tone follows from that. The step sizes of the heptatonic scales (shadja grama, madhyama grama) are given as sequences of 4, 3, and 2 shruti.There is no single standardized non-ambiguous definition of the exact sizes of all shruti intervals.

An explanation about the shruti system and one traditional derivation of the 22 shrutis is available here.

Another example of a compilation of the shrutis, with explicit values of the intervals, can be found here.

The system has been approximated by 22edo, though the traditional tuning system is unequal, and split-shruti systems may approximated by the 22&34d (or 12&22 or even 10&12 generalized Diaschismic if simplicity or accuracy is no object) temperament.

The Wikipedia entry on shrutis gives a quite accurate approximation of the shruti system as a 22-note subset of 53edo . (See also a discussion on the Yahoo tuning list.)

Some derivations in the light of modern temperament theory: Magic22 and Shrutar22 as srutis

## Other links

Article on indian tuning in Joe Monzo's tuning encyclopediaPatrick Moutal's Indian Music Page

Hindustani Music Resources - downloads and links, compiled by Matt Rahaim

http://www.musicresearch.in - an indian music research portal

www.chandrakantha.com - Indian classical music- portal on indian music, with detailed descriptions of a number of north indian rags

http://22shruti.com