Question

who discoverd saregama

Answer 1

natya shastra of samved

Answer 2

It is found in Chapter 28 of the ancient Natya Shastra, estimated to have been completed between 200 BCE to 200 CE. It calls the unit of tonal measurement or audible unit as Śhruti, with verse 28.21 introducing the musical scale as follows,तत्र स्वराः –
षड्‍जश्‍च ऋषभश्‍चैव गान्धारो मध्यमस्तथा ।
पञ्‍चमो धैवतश्‍चैव सप्तमोऽथ निषादवान् ॥ २१॥— Natya Shastra, 

These seven swaras are shared by both major raga systems of Indian classical music, that is the North Indian (Hindustani) and South Indian (Carnatic).