Vowel Space Gymnastics—An Augmented Perspective on Voice Acoustics and Formant Tuning: Part I—Basic Principles

Abstract: Formant tuning is fundamental to singing technique across numerous aesthetic styles. Acoustically, it occurs when a singer aligns a vocal tract resonance frequency with a harmonic frequency of the laryngeal voice source, typically through vowel articulation modifications. While the concept is already applied in voice pedagogy, certain foundational principles remain insufficiently integrated. Comprehensive analysis examining the complete vowel space can advance this understanding. This article is the first in a series dedicated to that objective. In this first part, fundamental concepts of acoustics and phonetics are reviewed.