Tuning technique varies for different Indian classical instruments.
For example, for the sitar: first, the main playing strings are tuned to Sa, Pa, Sa of two octaves.
Chikari strings are tuned to high Sa and Pa for resonance.
Tarabs (sympathetic strings) are tuned to the notes of the raga in sequence.
A tanpura is used as reference for accurate Sa.
For the Sarod: main strings are tuned to Sa, Pa, Sa with drone and rhythm strings adjusted accordingly.
Proper tuning ensures correct intonation, clear tone, and rich resonance.
Artists fine-tune with pegs and micro-adjusters for perfect pitch before every performance.