1) The Dhvanyaloka by Anandavardhana introduces the dhvani theory of suggestion, which posits that the essence of poetry lies not in the literal meaning of words but in the implicit, suggested meaning.
2) Dhvani can take three forms - vastu dhvani implies rare ideas, alankara dhvani suggests figures of speech, and rasa dhvani evokes aesthetic emotions without being explicitly stated.
3) Anandavardhana argues that dhvani is the soul of poetry that brings works to life, while other elements like rasa, alankara and guna are just parts of the poetic body. Dhvani