The human voice has essentially always played a part in music making; indeed, larger pipe organs have incorporated a Vox Humana stop for many years. Work on improving the naturalness of vocal synthesis using articulatory knowledge requires magnetic resonance imaging of natural vocal tract shapes and this has enabled 3-D printed models to be made. These can be stimulated with a quasi-larynx excitation signal and the possibility of a Vocal Tract Organ has emerged. This research report describes the current state of technical development of the Vocal Tract Organ and how it has been and could be used musically.
Howard, David M. (2016) Developing the Vocal Tract Organ. In: Journal of Creative Music Systems, Vol. 1, No. 1. Available at http://openmusiclibrary.org/article/986358/.