This thesis examines the role of female voices in contemporary urban public spaces, transmitted through hidden loudspeakers. Unlike overt surveillance, these announcements remain unquestioned yet significantly shape public environments. Through historical analysis, focusing on key moments in the development of public address systems, I explore their impact on urban governance and societal structures. Drawing on sonic methodologies and interdisciplinary perspectives from architectural history, feminist theory, sound studies, and philosophy, I investigate the power dynamics embedded in urban soundscapes. By deconstructing the evolution of PA systems and their influence on notions of biopolitics, governmentality, fear, desire, and gender, this research offers a critical understanding of how these architectures of the voice construct the urban experience.