– A printable overlay sheet where users place physical sliders (paper cutouts) over 1–5 intensity levels for each of the 13 figures, allowing them to visually plot and compare voice settings for different styles (e.g., "Speech: Anchor 2, Onset 3, Twang 1").
The Estill Voice Model is a scientific approach to voice training that focuses on the conscious control of individual anatomical structures within the vocal mechanism estill voice model pdf