Bhagavad Gita · Chapter 1: Arjuna's Despair

Bhagavad Gita 1.19

sa ghoṣo dhārtarāṣṭrāṇāṃ hṛdayāni vyadārayat | nabhaśca pṛthivīṃ caiva tumulo vyanunādayan ||

That tumultuous sound, echoing through sky and earth, tore at the hearts of Dhritarashtra's sons.

Modern context

The Kaurava noise was louder, yet nothing is said about it shaking anyone. The smaller army's sound 'tore the hearts' of the larger. People who know they have done wrong are unsettled from the inside, whatever their numbers.