Inter-speaker acoustic differences of sustained vowels at varied dysarthria severities for amyotrophic lateral sclerosis

Bhattacharjee, T and Vengalil, S and Belur, Y and Atchayaram, N and Ghosh, PK (2024) Inter-speaker acoustic differences of sustained vowels at varied dysarthria severities for amyotrophic lateral sclerosis. In: JASA Express Letters, 4 (12).

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Abstract

We study inter-speaker acoustic differences during sustained vowel utterances at varied severities of Amyotrophic Lateral Sclerosis-induced dysarthria. Among source attributes, jitter and standard deviation of fundamental frequency exhibit enhanced inter-speaker differences among patients than healthy controls (HCs) at all severity levels. Though inter-speaker differences in vocal tract filter attributes at most severity levels are higher than those among HCs for close vowels /i/ and /u/, these are comparable with or lower than those among HCs for the relatively more open vowels /a/ and /o/. The differences typically increase with severity except for a few parameters for /a/ and /i/. © 2024 Author(s).

Item Type:	Journal Article
Publication:	JASA Express Letters
Publisher:	American Institute of Physics
Additional Information:	The copyright for this article belongs to the publishers.
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	28 Jan 2025 12:58
Last Modified:	28 Jan 2025 12:58
URI:	http://eprints.iisc.ac.in/id/eprint/87319

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