Sthai

In Carnatic music, Sthai  or Staayi refers to the octave. Madhyama sthai refers to the middle octave, Tara sthai refers to the upper octave and Mandhira sthai refers to the lower octave. Sthai can be defined as the interval or span made up of shadja to nishad in Indian Music.

Types
The Five types of Sthai are: