You searched for: “capriloquisms
capriloquism (s) (noun), capriloquisms (pl)
1. Egophony, or increased resonance of voice sound: Capriloquism has a high-pitched bleating characteristic, like that of a goat.

Capriloquism is also known as "bronchoegophony", "egobronchophony", "tragophonia", and "tragophony".
2. Etymology: from Latin caper, "goat", + loquor, "to speak".