J Audiol Otol.
2016 Sep;20(2):80-84. 10.7874/jao.2016.20.2.80.
The Band-Importance Function for the Korean Standard Sentence Lists for Adults
- Affiliations
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- 1Division of Speech Pathology and Audiology, Research Institute of Audiology and Speech Pathology, College of Natural Sciences, Hallym University, Chuncheon, Korea.
- 2Department of Audiology, Hallym University of Graduate Studies, Seoul, Korea. leejh@hallym.ac.kr
- 3Samsung Electronics, Mobile Communications Business, Yongin, Korea.
- 4Department of Speech Pathology and Audiology, Graduate School, Hallym University, Chuncheon, Korea.
- KMID: 2351559
- DOI: http://doi.org/10.7874/jao.2016.20.2.80
Abstract
- BACKGROUND AND OBJECTIVES
The band-importance function (BIF) refers to a value characterizing the relative importance of different frequencies to speech intelligibility. The purpose of this study was to derive the BIF for the Korean standard sentence lists for adults (KS-SL-A).
SUBJECTS AND METHODS
In this study, sentences from the KS-SL-A were used as the speech material. Twenty-six normal-hearing Korean listeners participated and intelligibility scores in 8 filters with 3 signal-to-noise ratio conditions were obtained. Based on the intelligibility score percentages, the BIF for the KS-SL-A was derived by using an established protocol.
RESULTS
Band-importance weights varied across frequency bands. The most important frequency region was around 316 Hz (20.0%), and the importance of the frequency bands below the center frequency (CF) of 1,778 Hz was 59.6%. Therefore, low frequencies below the CF of 1,778 Hz were more important than high frequencies above the CF of 1,778 Hz.
CONCLUSIONS
The BIF for KS-SL-A could be applied towards developing a hearing aid fitting formulae for Korean listeners.
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