Development of Sound Field Audiometry System for Small Audiometric Booths and Comparison of Its Equivalence With Traditional System
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Objectives. Sound field (SF) audiometry tests are usually conducted in audiometric booths measuring greater than 2×2 m in size. However, most private ENT clinics carry about 1×1-m-sized audiometric booths, making SF audiometry testing difficult to perform. The aims of this study were to develop an SF audiometry system for use in smaller audiometric booths and compare its performance with traditional system. Methods. The newly developed SF audiometry system can yield an SF signal at a distance of about 30 cm from the subject’s ears. Its height can be adjusted according to the subject’s head height. We compared SF hearing results between the new SF system and the traditional SF audiometry system in 20 adults with normal hearing (40 ears) and 24 adults with impaired hearing levels (38 ears) who wore hearing aids. Comparative parameters included warble tone audiometry threshold, a speech reception threshold (SRT), and a speech discrimination score (SDS). For statistical analysis, paired t-test was used. The equivalence of both SF systems was tested using two one-sided test (TOST) with a margin of 5 dB (normal hearing participants) and 10 dB (hearing aids wearing participants). Results. Among participants with normal hearing, warble tone hearing thresholds of 0.5, 1, 2, and 4 kHz, average values of these four frequencies, and SRT were similar between the two systems (all P>0.05). Participants with hearing aids showed similar warble tone threshold and SRT (P>0.05) in both systems except for threshold of 4 kHz (P=0.033). SDS was significantly higher in the newly developed system (P<0.05). TOST results showed equivalent SF audiometry results using either system. Conclusion. Audiometric results of the newly developed SF audiometry system were equivalent to those of a traditional system. Therefore, the small SF audiometry system can be used at small audiometric booths present in most private ENT clinics.
Abstract
Objectives. Sound field (SF) audiometry tests are usually conducted in audiometric booths measuring greater than 2×2 m in size. However, most private ENT clinics carry about 1×1-m-sized audiometric booths, making SF audiometry testing difficult to perform. The aims of this study were to develop an SF audiometry system for use in smaller audiometric booths and compare its performance with traditional system. Methods. The newly developed SF audiometry system can yield an SF signal at a distance of about 30 cm from the subject’s ears. Its height can be adjusted according to the subject’s head height. We compared SF hearing results between the new SF system and the traditional SF audiometry system in 20 adults with normal hearing (40 ears) and 24 adults with impaired hearing levels (38 ears) who wore hearing aids. Comparative parameters included warble tone audiometry threshold, a speech reception threshold (SRT), and a speech discrimination score (SDS). For statistical analysis, paired t-test was used. The equivalence of both SF systems was tested using two one-sided test (TOST) with a margin of 5 dB (normal hearing participants) and 10 dB (hearing aids wearing participants). Results. Among participants with normal hearing, warble tone hearing thresholds of 0.5, 1, 2, and 4 kHz, average values of these four frequencies, and SRT were similar between the two systems (all P>0.05). Participants with hearing aids showed similar warble tone threshold and SRT (P>0.05) in both systems except for threshold of 4 kHz (P=0.033). SDS was significantly higher in the newly developed system (P<0.05). TOST results showed equivalent SF audiometry results using either system. Conclusion. Audiometric results of the newly developed SF audiometry system were equivalent to those of a traditional system. Therefore, the small SF audiometry system can be used at small audiometric booths present in most private ENT clinics.
참고문헌 (14)
- Goman AM, "Prevalence of hearing loss by severity in the United States", Am J Public Health, 106(10), pp.1820~1822 (2016)
- Jun HJ, "The prevalence of hearing loss in South Korea : data from a population-based study", Laryngoscope, 125(3), pp.690~694 (2015)
- Walker G, "Sound field audiometry : recommended stimuli and procedures", Ear Hear, 5(1), pp.13~21 (1984)
- 오수희, "General Framework of Hearing Aid Fitting Management", Journal of Audiology & Otology, 20(1), pp.1~7 (2016), 대한청각학회
- "Korean body size survey" (2018)[URL]
- Valente M, "Reliability and intersubject variability of the real ear unaided response", Ear Hear, 12(3), pp.216~220 (1991)
- Valente M, "Intratester test-retest reliability of insertion gain measures", Ear Hear, 11(3), pp.181~184 (1990)
- Hawkins DB, "Examination of two issues concerning functional gain measurements", J Speech Hear Disord, 52(1), pp.56~63 (1987)
- 조양선, "보청기 클리닉의 운영", 대한이비인후-두경부외과학회지, 53(6), pp.333~339 (2010), 대한이비인후과학회
- Humes LE, "The reliability of functional gain", J Speech Hear Disord, 55(2), pp.193~197 (1990)
- Rochlin GD, "Status of sound field audiometry among audiologists in the United States", J Am Acad Audiol, 4(2), pp.59~68 (1993)
- Dirks DD, "Speech audiometry : earphone and sound field", J Speech Hear Disord, 37(2), pp.162~176 (1972)
- International Organization for Standardization, "Acoustics: audiometric test methods. Part 2: sound field audiometry with pure-tone and narrow-band test signals (ISO 8253-2:2009)", International Organization for Standardization, ~ (2009)
- International Organization for Standardization, "Reference threshold of hearing at 20 Hz and 18 000 Hz under free-field listening conditions and at 20 Hz under diffuse-field listening conditions (ISO 389-7:2005", Amd 1:2016), 2016