Carnatic Swarasthanas vs Western Notes

Feb 3, 2017 • Ananth Pattabiraman

In an earlier post, we had demonstrated the difference between Carnatic Ga3 and its closest matching note on keyboards, the Major 3rd. It sparkled some discussion on forums and social media, and some of the readers began to think that only Ga3 is different from what is on keyboards while other swarasthanas are ok.

Actually, all swarasthanas deviate from their respective western notes!

Take a look at this visualization that shows the deviation of carnatic swarasthanams from their nearest western equal-tempered notes:

deviation of carnatic swarasthanas from their nearest ET notes

As you can clearly see from the chart:

  • Eight swarasthanas sound lower than keyboard notes.
  • Three swarasthanas sound higher.
  • Range of deviation is -15.64 cents (Dha2) to +11.73 cents (Ri1)

As a result, most swarasthanas will collide with their equivalent note on a keyboard and produce the out-of-tune beating effect as we have heard in case of Ga3.

Many carnatic music teachers make their students practice swarasthanas on keyboard in the hope that it might help them to improve their swara gyanam. Contrarily, it will only destroy their sense of swarasthana as most of the notes on a keyboard are very wrong. Let us fully understand the danger: according to this study, use of harmonium, which is also an equal tempered keyboard, has permanently skewed Hindustani music’s swara ratios. Fortunately, influence of harmonium is minimal in carnatic music, and the study says, we still retain the purity of our swarasthanas.

What is the alternative?

Absence of appropriate technology for carnatic is the reason why our teachers and students have to resort to other means such as keyboards.

On our part, we have created Shruti Carnatic Tuner, a reliable companion for authentic carnatic swarasthanas. It provides accurate reference tones. It also detects and shows you the swarasthanam when you sing or play. We, at kuyil, will continue to innovate apps tailor-made for carnatic that will empower teachers, students and performers.


Ananth Pattabiraman is a musician and co-founder of Kuyil, a startup dedicated to crafting apps for carnatic.
Shruti Carnatic Tuner, their android app, assists carnatic musicians and students with precise reference tones for swara sthanas.