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Original Article

Reference sound pressure level for Korean speech audiometry

, , , , &
Pages 59-62 | Received 15 Jul 2010, Accepted 21 Sep 2010, Published online: 04 Nov 2010
 

Abstract

Abstract

Objective: The purpose of this study was to examine the reference sound pressure level (RSPL) for Korean speech audiometry which was defined as the reference speech recognition threshold level (RSRTL) equivalent to 0 dB HL at the audiometer. Study sample: Subjects consisted of 20 adults (40 ears) with normal hearing sensitivity. Design: Puretone thresholds (PTs) were obtained in 2 dB steps at each octave band. The newly developed Korean bisyllabic words were used to establish the speech recognition thresholds (SRTs). The SRT was the level at 50% correct responses based on the psychometric function performed from -8 dB HL (12 dB SPL) up to the level at or above 90% correct responses in 2 dB steps. Results Conclusions: The mean SRT was 23.44 dB SPL for sets comprised of 36 Korean bisyllabic words. Thus, the difference between English and Korean RSRTLs was about 3.44 dB. We recommend further study to recalculate the RSRTL for Korean speech audiometry with more subjects.

Sumario

Objetivo: El propósito de este estudio fue examinar el nivel de presión sonora de referencia (RSPL) para la logoaudiometría en coreano, que fue definido como el nivel umbral de referencia para el reconocimiento del lenguaje (RSRTL), equivalente a 0 dB HL en el audiómetro. Muestra Del Estudio: Los sujetos de estudio fueron 20 adultos (40 oídos) con sensibilidad auditiva normal. Diseño: Se obtuvieron umbrales tonales puros (PT) en pasos de 2 dB para cada banda de octava. Se usaron las recientemente desarrolladas palabras bisilábicas coreanas para establecer los umbrales de reconocimiento del lenguaje (SRT). El SRT fue el nivel donde se obtuvo un 50% de respuestas correctas, con base en la función psicométrica realizada desde −8 dB HL (12 dB SPL) hasta un nivel ubicado donde se logra un 90% o mayor de respuestas correctas, en pasos de 2 dB. Resultados Y Conclusiones: La mediana del SRT fue de 23.44 dB SPL para listas de 36 palabras bisilábicas coreanas. Por tanto, la diferencia entre el SRT en coreano y en inglés fue de 3.44 dB. Recomendamos estudios adicionales para recalcular el RSRTL para la logoaudiometría en coreano con más sujetos.

Acknowledgements

This research was sponsored by a grant from the Korean Ministry of Knowledge Economy (Project 10028016).

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.

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