1. Adams, S.G., Dykstra, A., Jenkins, M., Jog, M.: Speech-to-noise levels and conversational intelligibility in hypophonia and Parkinson’s disease. J. Med. Speech-Lang. Pathol. 16(4), 165–173 (2008)
2. Arora, S., Lo, C., Hu, M., Tsanas, A.: Smartphone speech testing for symptom assessment in rapid eye movement sleep behavior disorder and Parkinson’s disease. IEEE Access 9, 44813–44824 (2021)
3. Baudouin, R., Lechien, J.R., Carpentier, L., Gurruchaga, J.M., Lisan, Q., Hans, S.: Deep brain stimulation impact on voice and speech quality in Parkinson’s disease: a systematic review. Otolaryngol. Head Neck Surg. 01945998221120189 (2022)
4. Boersma, P., Weenink, D.: PRAAT: doing phonetics by computer [computer program]. version 5.3. 51 (2013). http://www.praat.org/retrieved. Accessed 12 (2013)
5. Cernak, M., Orozco-Arroyave, J.R., Rudzicz, F., Christensen, H., Vásquez-Correa, J.C., Nöth, E.: Characterisation of voice quality of Parkinson’s disease using differential phonological posterior features. Comput. Speech Lang. 46, 196–208 (2017)