Noise, as we usually think of it, is background sound that interferes with our ability to hear more interesting sounds. In general terms, though, it is anything that interferes with the reception of signals of any sort. It includes extraneous energy in the environment, degradation of signals in transit, and spontaneous random activity in receivers and signalers. Whatever the cause, the consequence of noise is error by receivers, and these errors are the key to understanding how noise shapes the evolution of communication.

Noise Matters breaks new ground in the scientific understanding of how communication evolves in the presence of noise. Combining insights of signal detection theory with evidence from decades of his own original research, Haven Wiley explains the profound effects of noise on the evolution of communication. The coevolution of signalers and receivers does not result in ideal, noise-free communication, Wiley finds. Instead, signalers and receivers evolve to a joint equilibrium in which communication is effective but never error-free. Noise is inescapable in the evolution of communication.

Wiley’s comprehensive approach considers communication on many different levels of biological organization, from cells to individual organisms, including humans. Social interactions, such as honesty, mate choice, and cooperation, are reassessed in the light of noisy communication. The final sections demonstrate that noise even affects how we think about human language, science, subjectivity, and freedom. Noise Matters thus contributes to understanding the behavior of animals, including ourselves.

An illuminating study of early modern efforts to regulate sound in women’s residential institutions, and how the noises of city life—both within and beyond their walls—defied such regulation.

Amid the Catholic reforms of the sixteenth and seventeenth centuries, the number of women and girls housed in nunneries, reformatories, and charity homes grew rapidly throughout the city of Florence. Julia Rombough follows the efforts of legal, medical, and ecclesiastical authorities to govern enclosed women, and uncovers the experiences of the women themselves as they negotiated strict sensory regulations. At a moment when quiet was deeply entangled with ideals of feminine purity, bodily health, and spiritual discipline, those in power worked constantly to silence their charges and protect them from the urban din beyond institutional walls.

Yet the sounds of a raucous metropolis found their way inside. The noise of merchants hawking their wares, sex workers laboring and socializing with clients, youth playing games, and coaches rumbling through the streets could not be contained. Moreover, enclosed women themselves contributed to the urban soundscape. While some embraced the pursuit of silence and lodged regular complaints about noise, others broke the rules by laughing, shouting, singing, and conversing. Rombough argues that ongoing tensions between legal regimes of silence and the inevitable racket of everyday interactions made women’s institutions a flashpoint in larger debates about gender, class, health, and the regulation of urban life in late Renaissance Italy.

Attuned to the vibrant sounds of life behind walls of stone and sanction, A Veil of Silence illuminates a revealing history of early modern debates over the power of the senses.