Shruti (music)

Shruti (Sanskrit, f, श्रुति, Sruti, about "tone" ) are the 22 micro-intervals, which in Indian music divides one octave.

During the tempered tonal system of Western music, the octave ( frequency ratio 2:1 to the keynote ) divided into 12 equal semitones semitones, divides the Indian music teaching, the octave into 22 equal Shrutis a large, all of which are smaller than a semitone.

The theory of 22 Shrutis first appeared in Bharata Muni's around the time of factory -written on Natyashastra, in which he summarized the basics of ancient Indian Gandharva music.

List of 22 Shrutis

A possible division of the octave into 22 Shrutis is the following:

This correspond to seven syllables Sa, Ri, Ga, Ma, Pa, Dha and Ni our solfeggio and differ depending Do, Re, Mi, Fa, Sol, La, and Ti The numbers represent the different variations in the pitch of a tone ( according to our accidentals ♯ and ♭ ). The keynote Sa and also the fifth most Pa ( frequency ratio 3:2 to root) are exceptions to this possibility of variation.

In addition to the above division, there are others, such as dual- Pa or with only three different signs for each tone, in addition, the order of the notes within narrow limits, such as Ga1 before Ri4 vary.