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Audiol > Volume 7(1); 2011 > Article
Audiology 2011;7(1): 100-105.
Published online: June 30, 2011.
doi: http://dx.doi.org/10.21848/audiol.2011.7.1.100
압축역치의 조절을 통한 음질의 개선 사례보고
최민정, 이경원
한림국제대학원대학교 청각학과
Case reports of improving sound quality by compression threshold control
Min Jung Choi, Kyoung Won Lee
Department of Audiology, Hallym University of Graduate Studies, Seoul, Korea
Correspondence  Kyoung Won Lee ,Tel: (02) 2051-4951, Fax: (02) 3453-7833, Email: leekw@hallym.ac.kr
Received: April 27, 2011; Revised: May 31, 2011   Accepted: June 14, 2011.  Published online: June 30, 2011.
ABSTRACT
Listeners with sensorineural hearing loss (SNHL) have a relatively narrow dynamic range. Due to this reduced dynamic range of hearing, they are recommended to use hearing aids equipped with a special feature called wide dynamic range compression (WDRC). WDRC hearing instruments are configured with high compression ratio (CR) and low compression threshold (CT). However, sound quality can be affected by high CR and low CT in WDRC hearing aids. It is possible to control CT for improving sound quality. In this paper, three cases, including listeners who used ITC (In-The-Canal) type WDRC hearing aids, were reported . Three listeners were satisfied when CT was controlled between 60-70dB SPL.
Key Words: Compression Ratio, Compression Threshold, Sound Quality
중심단어: 압축비율, 압축역치, 음질.
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