What is the origin of the idiom "love the sound of one's own voice" and when to use it?

The idiom "love the sound of one's own voice" originates from the notion of someone being excessively fond of hearing themselves speak. It conveys the idea of a person who enjoys talking for the sake of talking, often without considering the interest or engagement of others in the conversation. It is typically used to describe individuals who tend to dominate discussions, monopolize speaking time, and lack awareness of the impact their words may have on listeners. Employing this idiom can serve as a gentle critique or a playful remark to highlight someone's self-indulgent verbosity.