Epilogue: In living rooms and multiplexes around the world, the dual-audio toggle sits unassuming on remotes and menus. It is a small lever of control: press it, and a film’s face changes subtly—an inflection shifts, a joke blooms differently, a rhythm adjusts. The chronicle of dual audio is not only about technology or markets; it is about how sound remaps human connection, letting stories travel without losing the accents and cadences that make them human.