Shiksha - Wikipedia

Shiksha is the field of Vedic study of sound, focussing on the letters of the Sanskrit alphabet, accent, quantity, stress, melody and rules of euphonic combination of words during a Vedic recitation. Each ancient Vedic school developed this field of Vedanga, and the oldest surviving phonetic textbooks are the Pratishakyas.

Shobun Baile
Source: Shiksha - Wikipedia