Dhaivata (Sanskrit: धैवत, romanized: Dhaivata) is the sixth svara from the seven svaras of Hindustani music and Carnatic music.
[1][2] Dhaivata is the long form of the syllable ध.
[3] For simplicity in pronouncing while singing the syllable, Dhaivata is pronounced as Dha (notation - D).
The following is the information about Dhaivata and its importance in Indian classical music : So the svara Dha is formed from Shadja.
Consequently, the Dha after the Pa of 320 Hz (Taar Saptak) has a frequency of 800 Hz i.e. the double of the Lower octave Dha.