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.

Thinking with Sound traces the formation of auditory knowledge in the sciences and humanities in the decades around 1900.
 
When the outside world is silent, all sorts of sounds often come to mind: inner voices, snippets of past conversations, imaginary debates, beloved and unloved melodies. What should we make of such sonic companions? Thinking with Sound investigates a period when these and other newly perceived aural phenomena prompted a far-reaching debate. Through case studies from Paris, Vienna, and Berlin, Viktoria Tkaczyk shows that the identification of the auditory cortex in late nineteenth-century neuroanatomy affected numerous academic disciplines across the sciences and humanities. “Thinking with sound” allowed scholars and scientists to bridge the gaps between theoretical and practical knowledge, and between academia and the social, aesthetic, and industrial domains. As new recording technologies prompted new scientific questions, new auditory knowledge found application in industry and the broad aesthetic realm. Through these conjunctions, Thinking with Sound offers a deeper understanding of today’s second “acoustic turn” in science and scholarship.