Professor emeritus Kenneth Bozeman explains open, closed and whoop timbre, spectral tone color and auditory roughness — then shows you how to use them in the studio.

Kenneth Bozeman, professor emeritus at Lawrence University and author of Practical Vocal Acoustics, walks you through the acoustics behind a seamless range. You'll learn absolute spectral tone color and why every frequency carries its own vowel color, how auditory roughness makes a sound read as "chesty" or "heady" regardless of the larynx, and how to identify open, closed and whoop timbre by ear. He demonstrates the coup de glotte through a lip-burr experiment, the chiaroscuro whisper for hearing the undervowel/overvowel duet, tongue-tip and NG tweaks, nose crunch, puppy cheeks and pharyngeal voice. Includes synthesizer demos, downloadable-chart references and a live Q&A.