In literature, the word "inaudible" frequently signifies more than just a lack of sound—it evokes a sense of subtlety, introspection, and the inherent limits of human expression. Authors like George Eliot [1] use it to describe the deeply personal nature of internal dialogue, suggesting that even our own reflections may remain unutterable. In historical and religious contexts, such as John Foxe’s narrative [2], the inaudible quality of a psalm underscores the desperate, often futile attempts to console and reach an audience beyond the clamor of reality. At the same time, authors like Ralph Waldo Emerson [3] imply that even our most solitary voices can be ephemeral as we merge with the world, while H. G. Wells and Charles Dickens [4, 5] use it to capture moments of obscured communication or reflection that hint at larger, unseen forces. Through these diverse examples, "inaudible" emerges as a literary device that encapsulates both the literal quietness of sound and the metaphorical silence of thought and emotion.