This project examines how sound has been scientifically understood, regulated, and contested in urban environments. By “biopolitics of audibility,” I refer to the historical processes through which sound was classified and governed as an environmental variable, shaping which forms of life and activity were permitted to persist in public space. Drawing on archives spanning federal collections, philanthropic records, and scientific and design institutions, the project traces how noise abatement policies, zoning regulations, and environmental expertise transformed sound into an object of governance. Through case studies from Central Park to contemporary community gardens, I show how greenspaces function as sites where scientific knowledge, sensory experience, and political power converge. While focused on New York City, the project offers a broader framework for understanding how modern cities govern sound as a means of organizing ecological and social life.