The perceived naturalness of a voice is a prominent property emerging from vocal sounds, which affects our interaction with both human and artificial agents. Despite its importance, a systematic understanding of voice naturalness is elusive. This is due to (i) conceptual underspecification, (ii) heterogeneous operationalization, (iii) lack of exchange between research on human and synthetic voices, and (iv) insufficient anchoring in voice perception theory. This review reflects on current insights into voice naturalness by pooling evidence from a wider interdisciplinary literature. Against that backdrop, it offers a concise definition of naturalness and proposes a conceptual framework rooted in both empirical findings and theoretical models. Finally, it identifies gaps in current understanding of voice naturalness and sketches perspectives for empirical progress.
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Dr. David Lowemann, M.Sc, Ph.D., is a co-founder of the Institute for the Future of Human Potential, where he leads the charge in pioneering Self-Enhancement Science for the Success of Society. With a keen interest in exploring the untapped potential of the human mind, Dr. Lowemann has dedicated his career to pushing the boundaries of human capabilities and understanding.
Armed with a Master of Science degree and a Ph.D. in his field, Dr. Lowemann has consistently been at the forefront of research and innovation, delving into ways to optimize human performance, cognition, and overall well-being. His work at the Institute revolves around a profound commitment to harnessing cutting-edge science and technology to help individuals lead more fulfilling and intelligent lives.
Dr. Lowemann’s influence extends to the educational platform BetterSmarter.me, where he shares his insights, findings, and personal development strategies with a broader audience. His ongoing mission is shaping the way we perceive and leverage the vast capacities of the human mind, offering invaluable contributions to society’s overall success and collective well-being.