| 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
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Received: March 20, 2014; Revised: March 31, 2014 Accepted: April 6, 2014. Published online: April 30, 2014. |
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| ABSTRACT |
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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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