AUTOPHONY
Etymology
Noun
autophony (uncountable)
The unusually loud hearing of a person's own voice, breathing or other self-generated sounds.
(medicine) An auscultatory process which consists of noting the tone of the observer's own voice, while he speaks, holding his head close to the patient's chest.
Source: Wiktionary
Au*toph"o*ny, n. Etym: [Auto- + Gr. (Med.)
Definition: An auscultatory process, which consists in noting the tone of
the observer's own voice, while he speaks, holding his head close to
the patient's chest. Dunglison.
Source: Webster’s Unabridged Dictionary 1913 Edition