The primary scientific resource exploring the anatomy and physiology of the Estill Figures. It is also available on the Amazon Kindle Store.
A guide designed for younger students or beginners using "Figure Buddies" to teach vocal control. Estill Voice Training Book Pdf
A mobile application featuring a library of exercises for developing control over vocal structures, available on the App Store and Google Play. Core Concepts in the Training The primary scientific resource exploring the anatomy and
A spectral analysis program that provides real-time visual feedback on pitch and voice quality. Estill Voice Training Book Pdf
The Estill Voice Training Certification Manual (currently Version 5.2) is available as a free download for those pursuing professional certification.
Estill Voiceprint Plus (w/ Figure Recordings & Testing Protocol)
Beyond PDFs, Estill utilizes interactive software to visualize vocal mechanics: