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Audiol > Volume 10(1); 2014 > Article
Audiology 2014;10(1): 43-52.
Published online: April 30, 2014.
doi: http://doi.org/10.21848/audiol.2014.10.1.43
광대역과 협대역 전화어음에 따른 단어 및 문장인지도와 음질인지
정인혜1, 전혜정2, 이경원3
1씨멘스코리아 보청기사업부
2LG전자기술원 미래IT융합연구소
3한림국제대학원대학교 청각학과
Word and Sentence Recognition Scores and Sound Qualities of Normal and Hearing-Impaired Listeners in Wide and Narrow Band Telephone Speech
In Hye Jeong1, Hyejeong Jeon2, Kyoung Won Lee3
1Department of Hearing Aid Business, Siemens Korea, Seoul
2LG Electronics Future IT R&D Lab, Seoul
3Department of Audiology, Hallym University of Graduate Studies, Seoul, Korea
Correspondence  Kyoung Won Lee ,Tel: (02) 2051-4951, Fax: (02) 3453-6618, Email: leekw@hallym.ac.kr
Received: March 20, 2014; Revised: March 31, 2014   Accepted: April 6, 2014.  Published online: April 30, 2014.
Authors tried to comparatively analyze between word recognition scores (WRSs), sentence recognition scores (SRSs) and sound quality evaluations according to wide-band telephone speech (WTS) and narrow-band telephone speech (NTS), with normal hearing (NH) and hearing impaired (HI) in quiet and noisy situations, using commercialized telephones on the market. The analysis was to determine that WTS, telephone speech of extended frequency bandwidth ranged in 100 ~ 7,000 Hz, contribute to WRS, SRS and sound qualities, compared to NTS. The results of this study were 1) in both the NH and HI groups, WRSs of WTS were higher than those of NTS. 2) Only in the HI group, SRSs were different between WTS and NTS. In a noisy situation rather than a quiet situation, SRSs of WTS were higher than those of NTS. 3) In both the NH and HI groups, the sound qualities of WTS were better than those of NTS. In this study, WRSs in both the NH and HI groups, and SRSs only in the HI group were found to be affected by the type of the frequency band of telephone speech. With industrial development and aging population, the HI population is rising, and communication over telephones in diverse environments is increasing. In this context, in order to promote feasible and effective communication of HI as well as NH, extension of telephone speech frequency bandwidth should be essential.
Key Words: Telephone speech, Wide-band, Narrow-band, Word recognition score, Sentence recognition score, Sound quality
중심단어: 전화어음, 광대역, 협대역, 단어인지도, 문장인지도, 음질
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