Joelle van Dyne is one of the most important female characters in David Foster Wallace’s Infinite Jest (1996). Joelle, who is remembered for her stunning beauty, disguises herself under the pseudonym of Madame Psychosis and hosts a late-night radio show in which she freely speaks to a niche audience. Through the use of sound studies theories, this paper investigates the positive effects that Joelle’s radiophonic voice produces on herself and her listeners. Joelle and her listeners live in Infinite Jest’s fictitious reality, which has many points in common with the American society of the 1990s. In that period, the spread of television and visual entertainment began to reveal its negative consequences on people’s mental health and psychological well-being. In Infinite Jest, Wallace discusses the dangers of a culture that prioritizes appearance and entertainment over meaningful values. This paper suggests that the character of Joelle reacts to these issues by counterposing the sound of her radiophonic voice to a culture that is becoming more and more visual. Sound proves to be the very element that permits this character to detach herself from her beautiful body-image and experience embodiment unrelated to her looks. At the same time, she powerfully and creatively affirms herself in the world through her radio show. Joelle’s voice paves the way for the creation of a democratic sonic community which includes every listener regardless of their appearance while permitting connection through sound resonance. This sonic community valorizes human emotions and shared values, which appeared to have been abandoned in a society dominated by visuality.