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Audiol > Volume 11(1); 2015 > Article
Audiology 2015;11(1): 37-44.
Published online: January 31, 2015.
doi: http://dx.doi.org/10.21848/audiol.2015.11.1.37
감각신경성난청의 단음절 및 문장인지역치에 필요한 신호대잡음비 연구
강재훈1,3, 김자희2, 최민정1,4, 이경원1
1한림국제대학원대학교 청각학과
2한림대학교 분자의과학협동과정
3벨톤보청기 서초센터
4연세이비인후과
A Study of Signal-to-Noise Ratios for Monosyllabic and Sentence Recognition Threshold in Sensorineural Hearing Loss
Jae Hoon Kang1,3, Ja Hee Kim2, Min Jung Choi1,4, Kyoung Won Lee1
1Department of Audiology, Hallym University of Graduate Studies, Seoul
2Inter-disciplinary Program Molecular Medicine, Hallym University, Chuncheon, Korea
3Beltone Hearing Aid Seocho Center, Seoul
4Yonsei Otorhinolaryngology Clinic, Seoul, Korea
Correspondence  Kyoung Won Lee ,Tel: (02) 2051-4951, Fax: (02) 3453-6618, Email: leekw@hallym.ac.kr
Received: October 23, 2014; Revised: January 3, 2015   Accepted: January 5, 2015.  Published online: January 31, 2015.
ABSTRACT
A major problem for most patients with hearing impairment is understanding speech in background noise. In the current study, we investigated to search of threshold of speech recognition at various signal-to-noise ratios (SNRs) using the monosyllabic words and sentences. Three listener groups consisting of 7 normal-hearing, 20 listeners with mild degree of sensorineural hearing loss, and 20 listeners with moderate degree of hearing loss (HL) were participated in this study. The subjects listen to the target monosyllables or sentences at eight conditions of SNRs (ranging from –12 to 9 dB SNR). The SNR required for 50% word recognition was -2.13 dB, -1.22 dB and 0.55 dB for normal-hearing, mild, and moderate HL listeners. The SNR for sentence recognition was -2.86 dB, -2.31 dB and –1.85 dB for the same listener groups. The 50% recognitions for sentence were obtained at a significantly lower SNR than for monosyllabic word. Regardless of the stimulus type, SNR for speech recognition threshold by sensorineural hearing loss with moderate HL were significantly higher than normal and mild HL. The results can be useful for development of speech-in-noise recognition test and decision on efficient SNR in aural rehabilitation for hearing aid users.
Key Words: Sensorineural hearing loss, Mono-syllable word recognition threshold, Sentence recognition threshold, Multi-talker babble noise, Signal-to-noise ratio
중심단어: 감각신경성난청, 단음절인지역치, 문장인지역치, 다화자잡음, 신호대잡음비
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