This comprehensive volume offers readers an in-depth, cross-disciplinary exploration of the physics and physiology of voice production, mechanism, and applied uses and concerns of the voice. It presents a set of scientific principles that apply to all aspects of voice production, including the most comprehensive treatment of the physical and physiologic principles underlying human voice disorders and voice training. Respected author and educator, Ingo Titze emphasizes physical law rather than empirical observation while relating the physical processes of voice production to other physical processes, inside or outside the human body. He clarifies the acoustic and biomechanical laws governing phonation and outlines chapter-by-chapter primary control variables such as pitch, loudness, register, and quality. The author also gives clinical and pedagogical tips directly related to scientific fact. What's more, Titze identifies and defines for readers the new field of vocology - the science and practice of voice habilitation.