Abstract
The objective of the work presented in the paper is to check the significance of duration modification for improving the speech intelligibility of the patients having slurred speech disorder due to traumatic brain injury (TBI). A slow speaking rate has been observed in the speech utterances of a patient having diffuse axonal injury, a type of TBI. To compensate the slow speaking rate, the utterances are subjected to duration modification for various scaling factors. Subjective listening tests are then conducted for assessing the effort required to understand the spoken utterances among a group of medical and non-medical listeners. The improved mean opinion scores (MOS) confirmed that the duration modification is indeed reduce the listening effort while perceiving the slurred speech utterances. From the listening tests, a speaker dependent duration modification factor of 0.75 has provided the best enhancement of the slurred speech with improved intelligibility.
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Acknowledgements
Authors would like to convey our sincere gratitude towards all the people who participated in the listening test. The paper would not have been possible without the time spent by the doctors of All India Institute of Medical Sciences (AIIMS) Mangalagiri who have prior experience interacting with stroke and TBI patients. Further, authors would like to appreciate the hospital management of Kumar center for stroke and neuro rehabilitation for helping us to collection the data and providing the ethical clearance for using the data for the academic research.
The funding for this paper is from the National Language Translation Mission (NLTM) sub consortium of the project titled “Speech Technologies in Indian Languages”, MEITY, Govt. of India.
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Banerjee, O. et al. (2023). Significance of Duration Modification in Reducing Listening Effort of Slurred Speech from Patients with Traumatic Brain Injury. In: Karpov, A., Samudravijaya, K., Deepak, K.T., Hegde, R.M., Agrawal, S.S., Prasanna, S.R.M. (eds) Speech and Computer. SPECOM 2023. Lecture Notes in Computer Science(), vol 14338. Springer, Cham. https://doi.org/10.1007/978-3-031-48309-7_47
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