| 비프로그램식 보청기에서 압축역치의 조절을 통한
배경소음의 감소에 대한 사례보고 |
| 이상연 |
| 벨톤히어링 |
| Case Report for Background Noise Reduction by Compression Threshold(CT) Control
in Non-Programmable Hearing Aids |
| Sang Yeon Lee |
| Belltone Hearing, Seoul, Korea |
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Received: October 16, 2008; Accepted: November 25, 2008. Published online: December 31, 2008. |
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| ABSTRACT |
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Most commercial companies currently produced non-programmable digital hearing aids. The key feature of this hearing aids was
adopting the WDRC amplification method in ITE (in-the-ear) type hearing aids. They were equipped with the 2-3 trimmers and
could be controlled for gain levels, frequency response curves, or OSPL90 properties. The price of the non-programmable hearing
aid was relatively lower than programmable ones while the noise reduction and acoustic feedback detection/control were limited in
non-programmable ones. This report was for the cases where background noise and internal noise were decreased with compression
thresholds in non-programmable digital hearing aids without noise reduction algorithms or expansion functions, which were commonly
built in programmable digital hearing aids. |
| Key Words:
Compression threshold (CT)·Background noise·Non-programmable hearing aid·Digital hearing aid. |
| 중심단어:
압축역치· 배경소음· 비프로그램보청기· 디지털보청기. |
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