Development of Thai Spondee Words for SRT Measurement in Children

Kanang Dermtoranin; Krisna Lertsukprasert; Mena Lao; Sumalai Maroonroge

Authors

Kanang Dermtoranin Department of Communication Sciences and Disorders, Faculty of Medicine Ramathibodi Hospit, Mahidol University, Thailand
Krisna Lertsukprasert Department of Communication Sciences and Disorders, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand https://orcid.org/0000-0002-9379-7797
Mena Lao Department of Statistics, Faculty of Science, Kasetsart University, Thailand https://orcid.org/0000-0002-3967-3179
Sumalai Maroonroge Texas A&M International University, Communication Sciences and Disorders, University Boulevard Laredo, USA

Keywords:

SRT / speech recognition materials / Thai spondee words

Abstract

Abstract

Objective: The purpose of this study was to develop a standardized Thai speech material to be used in the measurement of speech recognition threshold (SRT) in children.

Methods: The Thai speech material have been developed according to three essential criteria: word familiarity to the children, phonetic dissimilarity, and homogeneity with respect to basic audibility. The disyllabic words selected from a Thai fundamental word list, used in teaching Thai language at the first level, were analyzed to measure the intensity of each syllable. These spondee words were then assessed for familiarity. As a result, a total of 60 spondee words have been selected to evaluate the threshold of recognition of each word by 30 normal-hearing children.

Results: From the 60 spondee words, there were 25 spondee words, with relatively steep and homogeneous psychometric function slopes, selected to be included in a list of Thai speech material for children. The psychometric functions slopes at the 50% threshold of the final 25 spondee words, were found to have a mean of 10.76 %/dB.

Conclusions: The Thai speech material for children were developed according to the speech material criteria. Hence, this list can be used to evaluate the SRT of normal hearing children.

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