1. 1) Riesz, R. R., “Description and demonstration of an artificial larynx,” J. Acoust. Soc. Am., 1, 273–279 (1930).
2. 2) Barney, H. L. Haworth, F. E. and Dunn, H. K., “An experimental transistorized artificial larynx,” Bell Syst. Tech. J., 38, 1337–1356 (1959).
3. 3) American Speech-Language-Hearing Association (ASHA), “Speech Sound Disorders: Articulation and Phonology,” https://www.asha.org/practice-portal/clinical-topics/articulation-and-phonology/ (retrieved on Feb., 14, 2023).
4. 4) Denes, P. B. and Pinson, E. N., The Speech Chain: The Physics and Biology of Spoken Language, 2nd ed., W. H. Freeman, New York (1993).
5. 5) LaBlance, G. R., Kraus, K. and Steckol, K. F., “Rehabilitation of swallowing and communication following glossectomy,” Rehabilitation Nursing, 16(5), 266–270 (1991).